Lesson 3.1.1

3.1.1 Current, charge and potential difference Quiz: Pearson Edexcel Physics, Unit 3

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 3.1.1, Current, charge and potential difference: 20 multiple choice questions for the Pearson Edexcel Physics (9PH0), Unit 3: Electric Circuits, written with Revision Ninja.

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The 20 questions

  1. Electric current is defined as the rate of flow of what?

    • Resistance
    • Potential difference
    • Energy
    • Charge

  2. Potential difference is defined as energy transferred per unit of what?

    • Resistance
    • Time
    • Charge
    • Current

  3. What base SI units are equivalent to 1 coulomb of charge?

    • Joule per coulomb
    • Volt per second
    • Ampere second
    • Ampere per second

  4. The magnitude of the charge on one electron is approximately:

    • 9.1 x 10^-31 C
    • 1.6 x 10^-19 C
    • 1.6 x 10^-19 A
    • 6.0 x 10^23 C

  5. A current of 0.50 A flows for 2.0 minutes. What charge passes a point?

    • 0.25 C
    • 120 C
    • 1.0 C
    • 60 C

  6. A current of 1 A flows in a wire. Approximately how many electrons pass a point each second?

    • 1.6 x 10^19
    • 6.3 x 10^15
    • 1.6 x 10^-19
    • 6.3 x 10^18

  7. A charge of 12 C passes a point in 4.0 s. What is the current?

    • 8.0 A
    • 3.0 A
    • 48 A
    • 0.33 A

  8. A charge of 4.0 C gains 36 J of energy as it passes through a component. What is the potential difference across it?

    • 144 V
    • 40 V
    • 0.11 V
    • 9.0 V

  9. A 6.0 V supply drives a current of 0.25 A through a lamp for 60 s. How much energy is transferred?

    • 1.5 J
    • 90 J
    • 15 J
    • 360 J

  10. A current of 2.0 mA flows for 5.0 minutes. What charge passes through the circuit?

    • 10 C
    • 0.60 C
    • 0.67 C
    • 0.0020 C

  11. Which direction does conventional current flow outside a cell in a circuit?

    • Positive to negative
    • Anode to cathode
    • Negative to positive
    • Clockwise only

  12. How long does it take for 1.0 C of charge to pass a point in a wire carrying a current of 2.0 mA?

    • 0.0020 s
    • 500 s
    • 5.0 x 10^2 ms
    • 2.0 s

  13. A current of 2.0 mA flows in a wire. How many electrons pass a point each second?

    • 1.25 x 10^16
    • 2.0 x 10^16
    • 1.25 x 10^19
    • 3.2 x 10^-16

  14. A cell transfers 120 J of energy as 40 C of charge moves through it. What is the emf of the cell?

    • 30 V
    • 0.33 V
    • 4.8 V
    • 3.0 V

  15. A 4.0 V lamp carries a current of 2.0 A for 5.0 minutes. How much energy is transferred?

    • 2400 J
    • 40 J
    • 4800 J
    • 600 J

  16. A current of 3.0 A flows for 10 s. Which expression gives the number of coulombs of charge?

    • Q = I/t = 0.30 C
    • Q = I + t = 13 C
    • Q = I x t = 30 C
    • Q = I^2 t = 90 C

  17. What propagates through a circuit near the speed of light when a switch closes?

    • Electric field
    • Magnetic flux
    • Thermal energy
    • Conduction electrons

  18. A 15 A current flows through a heater for 2.0 hours. What charge flows?

    • 7.5 x 10^0 C
    • 1.1 x 10^5 C
    • 1.8 x 10^3 C
    • 30 C

  19. A battery supplies 36 kJ of energy when 9.0 kC of charge passes through it. What is its emf?

    • 0.25 V
    • 4.0 V
    • 40 V
    • 324 V

  20. A 12 V lamp has a current of 2.0 A flowing for 30 s. How much energy is transferred to the lamp?

    • 720 J
    • 180 J
    • 1440 J
    • 6.0 J

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