Electricity and Circuits class 6 MCQs: For Exams

Here are 100 MCQs on Electricity and Circuits for Class 6, with explanations:

1. What is electricity?

A) The flow of air
B) The flow of electrons
C) The flow of water
D) The flow of heat
Answer: B) The flow of electrons
Explanation: Electricity is the flow of electrons through a conductor.

2. Which of the following is a good conductor of electricity?

A) Rubber
B) Wood
C) Copper
D) Plastic
Answer: C) Copper
Explanation: Copper allows electricity to pass through it easily, making it a good conductor.

3. Which device is used to open or close a circuit?

A) Resistor
B) Battery
C) Switch
D) Bulb
Answer: C) Switch
Explanation: A switch is used to complete or break the circuit, controlling the flow of electricity.

4. What is the source of electricity in a circuit?

A) Bulb
B) Battery
C) Switch
D) Resistor
Answer: B) Battery
Explanation: The battery provides the necessary electrical energy to power a circuit.

5. What material is commonly used as an insulator?

A) Iron
B) Aluminum
C) Plastic
D) Copper
Answer: C) Plastic
Explanation: Plastic is a poor conductor of electricity and is used to cover wires for safety.

6. What is an electric circuit?

A) A path for water to flow
B) A path for air to flow
C) A complete path for electric current
D) A device to generate heat
Answer: C) A complete path for electric current
Explanation: An electric circuit is a closed loop through which electricity can flow.

7. Which part of a bulb allows it to glow?

A) Base
B) Glass cover
C) Filament
D) Switch
Answer: C) Filament
Explanation: The filament in a bulb heats up and glows when electricity passes through it.

8. What is the unit of electric current?

A) Volts
B) Amperes
C) Ohms
D) Watts
Answer: B) Amperes
Explanation: Electric current is measured in amperes (A).

9. Which of the following is not a part of an electric circuit?

A) Bulb
B) Battery
C) Water
D) Switch
Answer: C) Water
Explanation: Water is not a component of an electric circuit.

10. What type of energy is stored in a battery?

A) Mechanical energy
B) Electrical energy
C) Chemical energy
D) Thermal energy
Answer: C) Chemical energy
Explanation: A battery stores chemical energy, which is converted into electrical energy when connected to a circuit.

11. What happens when a circuit is open?

A) The current flows through it.
B) The current stops flowing.
C) The current increases.
D) The current flows faster.
Answer: B) The current stops flowing.
Explanation: In an open circuit, the path is broken, so no electricity can flow.

12. Which of the following is a conductor of electricity?

A) Glass
B) Plastic
C) Rubber
D) Silver
Answer: D) Silver
Explanation: Silver is an excellent conductor of electricity.

13. What is a closed circuit?

A) A circuit where electricity cannot flow
B) A circuit that allows electricity to flow
C) A circuit that has no battery
D) A circuit with an open switch
Answer: B) A circuit that allows electricity to flow
Explanation: A closed circuit means the path is complete, allowing current to flow.

14. Which of the following is used to prevent electrical accidents?

A) Conductors
B) Insulators
C) Batteries
D) Bulbs
Answer: B) Insulators
Explanation: Insulators prevent the flow of electricity, providing safety.

15. What do we call the flow of electric charge?

A) Voltage
B) Resistance
C) Current
D) Power
Answer: C) Current
Explanation: The flow of electric charge is known as electric current.

16. Which of these objects would be best for testing whether a material conducts electricity?

A) A magnet
B) A torch
C) A multimeter
D) A thermometer
Answer: C) A multimeter
Explanation: A multimeter can measure whether a material conducts electricity.

17. In a simple electric circuit, which component is needed to light up a bulb?

A) Paper
B) Battery
C) Rubber band
D) Wood
Answer: B) Battery
Explanation: A battery provides the power to light up the bulb in a circuit.

18. Which of these can cause a short circuit?

A) A broken wire
B) Water on wires
C) Too many bulbs
D) Proper insulation
Answer: B) Water on wires
Explanation: Water can cause a short circuit by allowing electricity to flow where it shouldn’t.

19. What happens when a bulb in a series circuit burns out?

A) Other bulbs continue to glow.
B) All bulbs stop glowing.
C) Only the next bulb stops glowing.
D) The current increases.
Answer: B) All bulbs stop glowing.
Explanation: In a series circuit, if one bulb burns out, the whole circuit is broken.

20. Which of the following measures electrical resistance?

A) Voltmeter
B) Ammeter
C) Ohmmeter
D) Thermometer
Answer: C) Ohmmeter
Explanation: An ohmmeter is used to measure resistance in a circuit.

21. In which type of circuit do all components share the same current?

A) Parallel circuit
B) Open circuit
C) Series circuit
D) Short circuit
Answer: C) Series circuit
Explanation: In a series circuit, all components share the same current.

22. What is the function of a fuse in a circuit?

A) To store energy
B) To prevent overheating
C) To increase current
D) To create more light
Answer: B) To prevent overheating
Explanation: A fuse breaks the circuit if the current is too high, preventing overheating.

23. Which type of circuit has multiple paths for the current to flow?

A) Series circuit
B) Open circuit
C) Parallel circuit
D) Short circuit
Answer: C) Parallel circuit
Explanation: In a parallel circuit, electricity has multiple paths to flow.

24. What does the symbol “Ω” represent in an electric circuit?

A) Current
B) Voltage
C) Resistance
D) Power
Answer: C) Resistance
Explanation: “Ω” (ohm) is the unit of electrical resistance.

25. Which device stores electrical energy in a circuit?

A) Resistor
B) Capacitor
C) Switch
D) Diode
Answer: B) Capacitor
Explanation: A capacitor stores and releases electrical energy in a circuit.

26. What is an electric cell?

A) A device to store light
B) A device to produce electricity
C) A device to increase resistance
D) A device to create heat
Answer: B) A device to produce electricity
Explanation: An electric cell produces electricity through chemical reactions.

27. What is the unit of voltage?

A) Ohm
B) Ampere
C) Volt
D) Watt
Answer: C) Volt
Explanation: Voltage is measured in volts, which indicates the potential difference between two points.

28. What happens when an insulator is placed in a circuit?

A) The current increases.
B) The current stops flowing.
C) The voltage decreases.
D) The resistance decreases.
Answer: B) The current stops

flowing.
Explanation: An insulator prevents the flow of electricity in a circuit.

29. Which of these is an example of a source of electric current?

A) Paper
B) Battery
C) Wire
D) Plastic
Answer: B) Battery
Explanation: A battery is a common source of electric current.

30. Which component is used to increase the resistance in a circuit?

A) Switch
B) Battery
C) Resistor
D) Capacitor
Answer: C) Resistor
Explanation: A resistor is used to limit or control the amount of current flowing in a circuit.

Here are the remaining 70 MCQs with explanations on Electricity and Circuits for Class 6:

31. What does a resistor do in a circuit?

A) It stops the flow of current
B) It stores energy
C) It increases the current
D) It reduces the current
Answer: D) It reduces the current
Explanation: A resistor limits or reduces the flow of electric current in a circuit.

32. What kind of circuit allows current to flow through multiple paths?

A) Series circuit
B) Parallel circuit
C) Open circuit
D) Short circuit
Answer: B) Parallel circuit
Explanation: A parallel circuit allows current to flow through multiple paths, unlike a series circuit where it flows through only one path.

33. What is the function of a light bulb in a circuit?

A) It stores current
B) It converts electrical energy into light energy
C) It stops the flow of current
D) It increases voltage
Answer: B) It converts electrical energy into light energy
Explanation: A light bulb glows when electricity flows through it, converting electrical energy into light and heat.

34. Which of the following is not a conductor of electricity?

A) Glass
B) Copper
C) Aluminum
D) Iron
Answer: A) Glass
Explanation: Glass is an insulator and does not allow electricity to pass through it.

35. What does a complete circuit require?

A) Only a bulb and a switch
B) A battery, a switch, and a conductor
C) Only a switch and a conductor
D) Only a battery and a conductor
Answer: B) A battery, a switch, and a conductor
Explanation: A complete circuit needs a source of power (battery), a path (conductor), and a control mechanism (switch) to allow current to flow.

36. Why are electrical wires coated with plastic?

A) To prevent them from melting
B) To prevent heat loss
C) To insulate them and protect from electric shocks
D) To conduct electricity
Answer: C) To insulate them and protect from electric shocks
Explanation: Plastic is an insulator and prevents accidental contact with the conducting wires, ensuring safety.

37. Which of the following can store energy and release it as needed?

A) Resistor
B) Diode
C) Capacitor
D) Switch
Answer: C) Capacitor
Explanation: A capacitor stores electrical energy and releases it when required.

38. Which of the following does not require an electrical circuit to function?

A) Torch
B) Fan
C) Book
D) Electric heater
Answer: C) Book
Explanation: A book is not an electrical device and does not need an electric circuit to function.

39. Which unit is used to measure electrical resistance?

A) Volt
B) Ampere
C) Ohm
D) Watt
Answer: C) Ohm
Explanation: Electrical resistance is measured in ohms (Ω).

40. Which of the following is the source of electric power in a household?

A) Bulb
B) Fuse
C) Power station
D) Switch
Answer: C) Power station
Explanation: Electricity is generated at power stations and supplied to homes.

41. What is a circuit breaker?

A) A device to store electricity
B) A switch to stop the current if it is too high
C) A bulb in a circuit
D) A device to increase current
Answer: B) A switch to stop the current if it is too high
Explanation: A circuit breaker automatically stops the flow of current if it exceeds a safe level, protecting the circuit.

42. What is the purpose of an electric switch?

A) To increase the voltage
B) To decrease the resistance
C) To open or close an electric circuit
D) To store electric charge
Answer: C) To open or close an electric circuit
Explanation: An electric switch controls the flow of electricity by opening (breaking) or closing (completing) the circuit.

43. What happens in a short circuit?

A) The circuit stops working
B) The current flows through a very low-resistance path
C) The resistance increases
D) The battery becomes weaker
Answer: B) The current flows through a very low-resistance path
Explanation: A short circuit occurs when electricity takes an unintended path of low resistance, potentially causing damage or overheating.

44. What type of circuit allows all bulbs to glow even if one bulb burns out?

A) Series circuit
B) Parallel circuit
C) Open circuit
D) Short circuit
Answer: B) Parallel circuit
Explanation: In a parallel circuit, each bulb has its own path for current to flow, so if one burns out, others still work.

45. What is the difference between a conductor and an insulator?

A) Conductors allow electricity to flow, while insulators block it
B) Insulators allow electricity to flow, while conductors block it
C) Both conductors and insulators allow electricity to flow
D) Neither conducts electricity
Answer: A) Conductors allow electricity to flow, while insulators block it
Explanation: Conductors allow the flow of electricity, whereas insulators prevent it.

46. What does the symbol for a switch in an electric circuit look like?

A) A zigzag line
B) A break in a straight line with a dot
C) A circle with a cross
D) A straight line with an arrow
Answer: B) A break in a straight line with a dot
Explanation: The symbol for a switch in circuit diagrams looks like a break in a straight line.

47. What does the flow of current in an electric circuit produce?

A) Light
B) Heat
C) Magnetic field
D) All of the above
Answer: D) All of the above
Explanation: The flow of current in a circuit can produce light (in bulbs), heat (in heaters), and a magnetic field (in electromagnets).

48. What is the function of a fuse in a circuit?

A) To stop the flow of electricity permanently
B) To generate electricity
C) To protect the circuit from high current
D) To reduce the current
Answer: C) To protect the circuit from high current
Explanation: A fuse breaks the circuit if the current becomes too high, protecting the circuit from damage.

49. Which device measures the potential difference in a circuit?

A) Ammeter
B) Voltmeter
C) Ohmmeter
D) Thermometer
Answer: B) Voltmeter
Explanation: A voltmeter is used to measure the potential difference (voltage) in a circuit.

50. Why does a filament in a light bulb glow?

A) Due to chemical reaction
B) Due to electrical resistance heating it up
C) Due to the motion of the switch
D) Due to air circulation
Answer: B) Due to electrical resistance heating it up
Explanation: The filament in a light bulb has high resistance, which causes it to heat up and glow when electricity flows through it.

51. Which part of a simple circuit connects the components together?

A) Wire
B) Bulb
C) Battery
D) Switch
Answer: A) Wire
Explanation: Wires connect the different components of a circuit, allowing current to flow between them.

52. What does a power source in a circuit provide?

A) Resistance
B) Current
C) Switches
D) Bulbs
Answer: B) Current
Explanation: The power source (battery or cell) provides the current needed for electricity to flow through the circuit.

53. Which type of energy is converted into electrical energy in a battery?

A) Light energy
B) Chemical energy
C) Thermal energy
D) Mechanical energy
Answer: B) Chemical energy
Explanation: A battery converts stored chemical energy into electrical energy to power a circuit.

54. What happens if the path of a circuit is broken?

A) Current continues to flow
B) Current stops flowing
C) The circuit becomes stronger
D) The current

increases
Answer: B) Current stops flowing
Explanation: When the circuit path is broken (open circuit), electricity cannot flow, and the circuit stops working.

55. Which of the following materials is best for conducting electricity?

A) Rubber
B) Plastic
C) Copper
D) Wood
Answer: C) Copper
Explanation: Copper is an excellent conductor of electricity and is commonly used in wires and electrical components.

56. What is the main role of a circuit diagram?

A) To generate electricity
B) To explain how electric circuits work
C) To increase current
D) To store electricity
Answer: B) To explain how electric circuits work
Explanation: A circuit diagram is a visual representation of the components in a circuit and how they are connected.

57. In which type of circuit are the components connected one after the other?

A) Parallel circuit
B) Series circuit
C) Open circuit
D) Short circuit
Answer: B) Series circuit
Explanation: In a series circuit, the components are connected end-to-end, forming a single path for current to flow.

58. What causes an electric shock?

A) High voltage
B) Low current
C) Open circuit
D) Insulation
Answer: A) High voltage
Explanation: Electric shock occurs when a person comes into contact with a high voltage or current source.

59. Which of the following devices is used to produce light in a circuit?

A) Resistor
B) Fuse
C) Bulb
D) Capacitor
Answer: C) Bulb
Explanation: A bulb is used to produce light when current flows through its filament.

60. What is a rheostat used for?

A) To open the circuit
B) To measure voltage
C) To control current in a circuit
D) To store electricity
Answer: C) To control current in a circuit
Explanation: A rheostat is a variable resistor that allows control over the current flowing in a circuit.

61. Which of these symbols represents a battery in a circuit diagram?

A) Circle with a cross inside
B) A long and short line next to each other
C) A zigzag line
D) A triangle
Answer: B) A long and short line next to each other
Explanation: A battery is represented by a pair of parallel lines—one longer (positive) and one shorter (negative).

62. What material is used in electrical wires to carry current?

A) Copper
B) Rubber
C) Plastic
D) Glass
Answer: A) Copper
Explanation: Copper is widely used in electrical wiring due to its excellent conductivity.

63. What does an open switch do to a circuit?

A) Allows current to flow
B) Increases resistance
C) Stops current from flowing
D) Decreases voltage
Answer: C) Stops current from flowing
Explanation: An open switch breaks the circuit, preventing current from flowing.

64. What type of current flows in only one direction?

A) Alternating current (AC)
B) Direct current (DC)
C) Static electricity
D) Induced current
Answer: B) Direct current (DC)
Explanation: Direct current flows in only one direction, unlike alternating current, which periodically reverses direction.

65. Which of these is a disadvantage of a series circuit?

A) It’s too complex
B) Current divides into different paths
C) If one component fails, the whole circuit stops working
D) It produces too much heat
Answer: C) If one component fails, the whole circuit stops working
Explanation: In a series circuit, if one component fails, the entire circuit is broken, and current cannot flow.

66. Why are electric wires usually made of copper?

A) Copper is very cheap
B) Copper has high resistance
C) Copper is a good conductor of electricity
D) Copper is an insulator
Answer: C) Copper is a good conductor of electricity
Explanation: Copper is used in electric wires because it is a very good conductor of electricity.

67. What happens if two wires carrying electricity touch each other directly?

A) It creates an open circuit
B) It causes a short circuit
C) It stores electricity
D) It reduces voltage
Answer: B) It causes a short circuit
Explanation: When two conducting wires touch each other, they create a short circuit, allowing current to flow through a low-resistance path, potentially causing damage.

68. Which of the following uses a large amount of electric current?

A) Table fan
B) Television
C) Refrigerator
D) Torch
Answer: C) Refrigerator
Explanation: A refrigerator uses more electric current compared to a table fan or television because it powers cooling systems and motors.

69. What happens to a bulb when it is connected to a low-resistance circuit?

A) The bulb becomes dim
B) The bulb glows brighter
C) The bulb does not work
D) The bulb breaks
Answer: B) The bulb glows brighter
Explanation: A low-resistance circuit allows more current to flow, which makes the bulb glow brighter.

70. Why does a filament in a bulb need high resistance?

A) To store electricity
B) To produce light by heating up
C) To reduce current
D) To increase current
Answer: B) To produce light by heating up
Explanation: The filament in a bulb needs high resistance so that it heats up and produces light when current flows through it.

71. What happens to a battery’s stored energy when it is used in a circuit?

A) It is destroyed
B) It is converted into light, heat, or motion
C) It remains stored
D) It increases
Answer: B) It is converted into light, heat, or motion
Explanation: A battery’s stored chemical energy is converted into electrical energy, which can then be converted into light, heat, or mechanical energy in a circuit.

72. Why are fuses important in household circuits?

A) They decrease the voltage
B) They protect appliances from damage
C) They store energy
D) They increase the current
Answer: B) They protect appliances from damage
Explanation: Fuses blow when the current exceeds a certain limit, preventing damage to appliances and circuits.

73. What will happen if the voltage in a circuit is increased?

A) Current will increase
B) Current will decrease
C) The circuit will open
D) Resistance will increase
Answer: A) Current will increase
Explanation: Increasing the voltage increases the current, as voltage is directly proportional to current (Ohm’s Law).

74. What does an electric motor do?

A) Converts electrical energy into mechanical energy
B) Converts mechanical energy into electrical energy
C) Stores electrical energy
D) Converts heat energy into electrical energy
Answer: A) Converts electrical energy into mechanical energy
Explanation: An electric motor uses electrical energy to create mechanical motion.

75. Which part of a circuit is responsible for controlling the flow of current?

A) Resistor
B) Bulb
C) Switch
D) Wire
Answer: C) Switch
Explanation: A switch controls the flow of electricity in a circuit by opening or closing it.

76. What is the relationship between current and resistance in a circuit?

A) They are directly proportional
B) They are inversely proportional
C) They are unrelated
D) Both remain constant
Answer: B) They are inversely proportional
Explanation: According to Ohm’s Law, as resistance increases, current decreases, and vice versa.

77. What does an ammeter measure?

A) Voltage
B) Resistance
C) Current
D) Power
Answer: C) Current
Explanation: An ammeter is used to measure the flow of electric current in a circuit.

78. What happens to the current when the resistance of a circuit increases?

A) Current increases
B) Current decreases
C) Current remains the same
D) Voltage decreases
Answer: B) Current decreases
Explanation: According to Ohm’s Law, an increase in resistance results

in a decrease in current.

79. What is the main source of energy in a solar-powered device?

A) Wind
B) Sun
C) Water
D) Battery
Answer: B) Sun
Explanation: Solar-powered devices use energy from sunlight, which is converted into electrical energy.

80. What does a transformer do in an electrical circuit?

A) Converts electrical energy into mechanical energy
B) Changes the voltage level of an electric current
C) Stores electrical energy
D) Converts AC to DC
Answer: B) Changes the voltage level of an electric current
Explanation: A transformer changes the voltage level of an electric current, either increasing or decreasing it for different applications.

81. What is the purpose of insulation in electrical wires?

A) To increase current
B) To prevent electric shocks
C) To store electricity
D) To increase voltage
Answer: B) To prevent electric shocks
Explanation: Insulation is used to cover electrical wires to prevent contact with exposed conductors, reducing the risk of electric shocks.

82. What happens when a parallel circuit is used in a home’s wiring system?

A) All devices share the same current
B) Each device has its own current path
C) The current remains constant
D) The circuit does not work
Answer: B) Each device has its own current path
Explanation: In a parallel circuit, each device is connected to the same voltage source but has its own path for current, allowing devices to operate independently.

83. What is the function of a fuse in an electrical circuit?

A) To increase voltage
B) To control current
C) To protect the circuit from overheating
D) To store energy
Answer: C) To protect the circuit from overheating
Explanation: A fuse is a safety device that melts and breaks the circuit if the current exceeds a safe level, protecting the circuit from damage due to overheating.

84. Which of the following units is used to measure resistance?

A) Ampere
B) Volt
C) Watt
D) Ohm
Answer: D) Ohm
Explanation: Resistance is measured in ohms, represented by the symbol Ω.

85. What happens if a short circuit occurs in a circuit?

A) Voltage increases
B) Current decreases
C) Current flows through an unintended low-resistance path
D) The circuit becomes open
Answer: C) Current flows through an unintended low-resistance path
Explanation: A short circuit allows current to flow through a low-resistance path, bypassing other components and potentially causing damage.

86. What is the primary function of a resistor in a circuit?

A) To store energy
B) To resist or reduce the flow of current
C) To increase voltage
D) To control the frequency of current
Answer: B) To resist or reduce the flow of current
Explanation: A resistor limits the amount of current that can flow through a circuit by providing resistance.

87. What is the role of a capacitor in a circuit?

A) To store electrical energy
B) To increase current
C) To decrease voltage
D) To measure resistance
Answer: A) To store electrical energy
Explanation: A capacitor temporarily stores electrical energy in an electric field and releases it when needed.

88. What does a voltmeter measure?

A) Current
B) Resistance
C) Voltage
D) Power
Answer: C) Voltage
Explanation: A voltmeter measures the potential difference (voltage) between two points in a circuit.

89. What happens when resistance increases in a circuit with a fixed voltage?

A) Current decreases
B) Current increases
C) Voltage decreases
D) Voltage increases
Answer: A) Current decreases
Explanation: According to Ohm’s Law (V = IR), when resistance increases, current decreases if the voltage remains constant.

90. What type of electricity is generated by rubbing two objects together?

A) Current electricity
B) Static electricity
C) Alternating current
D) Induced current
Answer: B) Static electricity
Explanation: Rubbing two objects together generates static electricity by transferring electrons, creating an imbalance of charges.

91. Which device stores electric charge in a circuit?

A) Transformer
B) Resistor
C) Capacitor
D) Diode
Answer: C) Capacitor
Explanation: A capacitor stores electrical energy in the form of an electric charge in a circuit.

92. Which of the following is a property of conductors?

A) They have high resistance
B) They allow the flow of electric current
C) They store electricity
D) They block the flow of current
Answer: B) They allow the flow of electric current
Explanation: Conductors, such as metals, have low resistance and allow electric current to flow through them easily.

93. What type of current flows back and forth in a circuit?

A) Direct current (DC)
B) Alternating current (AC)
C) Static current
D) Magnetic current
Answer: B) Alternating current (AC)
Explanation: Alternating current periodically changes direction, unlike direct current, which flows in one direction.

94. What is the purpose of grounding in an electrical system?

A) To increase voltage
B) To prevent electric shock
C) To reduce current
D) To increase resistance
Answer: B) To prevent electric shock
Explanation: Grounding provides a safe path for electricity to flow to the earth, reducing the risk of electric shock.

95. What happens to the brightness of bulbs in a parallel circuit if one bulb burns out?

A) All bulbs go out
B) The remaining bulbs glow brighter
C) The remaining bulbs stay lit with the same brightness
D) The remaining bulbs glow dimly
Answer: C) The remaining bulbs stay lit with the same brightness
Explanation: In a parallel circuit, each bulb has its own path for current, so if one burns out, the others are unaffected.

96. What is the main function of a diode in a circuit?

A) To store energy
B) To control the direction of current flow
C) To measure voltage
D) To resist current
Answer: B) To control the direction of current flow
Explanation: A diode allows current to flow in one direction only, acting as a one-way valve in a circuit.

97. Why are metals used in electrical wires?

A) Metals have high resistance
B) Metals are good conductors of electricity
C) Metals are lightweight
D) Metals are non-conductors
Answer: B) Metals are good conductors of electricity
Explanation: Metals such as copper and aluminum are excellent conductors of electricity, allowing current to flow with minimal resistance.

98. What happens when a circuit is short-circuited?

A) The circuit becomes more efficient
B) The circuit is overloaded and may cause a fire
C) The voltage increases
D) The current decreases
Answer: B) The circuit is overloaded and may cause a fire
Explanation: A short circuit occurs when current bypasses the normal path, leading to an overload that can cause overheating and potentially a fire.

99. What is the effect of using a thicker wire in a circuit?

A) Increases resistance
B) Reduces resistance
C) Increases voltage
D) Decreases current
Answer: B) Reduces resistance
Explanation: A thicker wire has less resistance compared to a thinner wire, allowing more current to flow through it.

100. What is the role of a switch in an electric circuit?

A) To increase current
B) To control the flow of current
C) To measure voltage
D) To store energy
Answer: B) To control the flow of current
Explanation: A switch is used to either allow or stop the flow of electric current in a circuit by opening or closing the circuit.

These MCQs cover the fundamental concepts of electricity and circuits for Class 6 students, ensuring a strong understanding of basic electrical principles with explanations for each question.

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