Electrical energy and electrical power: past paper questions

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• Question 27Oct/Nov 2025, paper 11Multiple choice1 markHas a diagram

  The diagram shows part of an electric circuit. The reading on the voltmeter is $16\text{ V}$. The current in the resistor is $8.0\text{ A}$.

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• Question 6Oct/Nov 2023, paper 31Structured9 marksHas a diagram

  Fig. 6.1 shows four wind turbines. Describe how a wind turbine generates electrical power.

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• Question 30Oct/Nov 2025, paper 12Multiple choice1 mark

  There is a current $I$ in a resistor for a time $t$. The potential difference (p.d.) across the resistor is $V$. Which equation gives the energy $E$ transferred by the resistor?

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• Question 30Oct/Nov 2024, paper 11Multiple choice1 mark

  The mains voltage is 120 V. Which fuse should be fitted to an electric kettle with a power of 1.5 kW?

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• Question 9Oct/Nov 2023, paper 31Structured7 marksHas a diagram

  A student investigates an electric circuit. Fig. 9.1 shows the student’s circuit. Describe the purpose of the variable resistor in Fig. 9.1.

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• Question 31Oct/Nov 2025, paper 13Multiple choice1 mark

  There is a current of $2.0\text{ A}$ in a resistor for a time of $30\text{ s}$. The potential difference (p.d.) across the resistor is $12\text{ V}$. How much energy is transferred in the resistor?

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• Question 27Oct/Nov 2024, paper 12Multiple choice1 markHas a diagram

  The diagram shows the information label on an electric kettle.

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• Question 9Oct/Nov 2023, paper 32Structured7 marksHas a diagram

  Fig. 9.1 shows an electric water heater. The heater is connected to the mains electrical supply. Fig. 9.2 shows the electrical safety label for the heater.

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• Question 7Oct/Nov 2023, paper 33Structured9 marksHas a diagram

  Two identical resistors, $R_1$ and $R_2$, are connected to a 24 V battery, as shown in Fig. 7.1. The value of each resistor is 50 $\mathrm{\Omega }$. Calculate the combined resistance of $R_1$ and $R_2$ when they are connected as shown in Fig. 7.1.

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• Question 28May/June 2026, paper 22Multiple choice1 mark

  There is an electric current $I$ in a resistor for a time $t$. The potential difference (p.d.) across the resistor is $V$. Which equation can be used to calculate the energy $E$ transferred in the resistor?

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• Question 32Oct/Nov 2025, paper 21Multiple choice1 markHas a diagram

  Cables transmit electrical power from the output of the transformer at a power station to the input of another transformer at a substation. The power at the output of the transformer at the power station is $400\text{ MW}$.

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• Question 26Oct/Nov 2024, paper 22Multiple choice1 markHas a diagram

  In the circuit shown, the voltmeter reads $2.0\text{ V}$.

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• Question 6Oct/Nov 2023, paper 42Structured7 marksHas a diagram

  Fig. 6.1 shows the circuit diagram for a flashlight (torch). The electromotive force (e.m.f.) of the battery is $4.5\text{ V}$. The circuit contains a $60\mathrm{\Omega }$ fixed resistor.

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• Question 27May/June 2026, paper 23Multiple choice1 mark

  Which quantity is measured in kilowatt-hours?

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• Question 10Oct/Nov 2024, paper 31Structured8 marks

  In an experiment, a student uses an electrical heater connected to a power supply. The current in the electrical heater is $2.2\text{ A}$. The voltage (p.d.) across the heater is $12\text{ V}$.

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• Question 6Oct/Nov 2023, paper 43Structured11 marksHas a diagram

  On Fig. 6.1, sketch the current–voltage graph of a filament lamp and explain its shape.

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• Question 4May/June 2026, paper 31Structured12 marksHas a diagram

  A student uses an electric motor to turn a wheel, as shown in Figure 4.1. Give the name of the energy store that increases as the wheel turns faster.

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• Question 8Oct/Nov 2025, paper 31Structured13 marks

  A television uses many electrical components. The potential difference (voltage) across a component is $72\text{ V}$. The current in the component is $0.024\text{ A}$.

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• Question 8Oct/Nov 2024, paper 33Structured9 marksHas a diagram

  A student connects a circuit with two lamps and three switches, ${\text{S}}_1$, ${\text{S}}_2$ and ${\text{S}}_3$, as shown in Fig. 8.1. The student switches on one lamp. State which switches the student closes to switch on only one lamp.

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• Question 27May/June 2023, paper 11Multiple choice1 markHas a diagram

  The battery on a bicycle is connected in parallel to its lamp and bell. The circuit includes two switches, ${\text{S}}_1$ and ${\text{S}}_2$. The cyclist closes ${\text{S}}_1$ to light the lamp.

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• Question 8May/June 2026, paper 32Structured10 marks

  A heater is connected to a $230\text{ V}$ mains supply. The current in the heater is $11.5\text{ A}$. Calculate the resistance of the heater.

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• Question 7Oct/Nov 2025, paper 33Structured10 marks

  A student is making a torch. The torch needs a potential difference (p.d) of $6.0\text{ V}$. The electromotive force (e.m.f.) of each cell for the torch is $1.5\text{ V}$.

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• Question 9Oct/Nov 2024, paper 42Structured9 marksHas a diagram

  Fig. 9.1 shows a wireless charging plate used to charge the battery in a mobile phone (cell phone). The coil of wire is part of an electric circuit. The charging plate is connected to an a.c.

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• Question 3Oct/Nov 2025, paper 41Structured9 marksHas a diagram

  Fig. 3.1 shows a simplified diagram of a solar cell. Describe the energy transfer in the solar cell.

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• Question 8May/June 2026, paper 41Structured9 marksHas a diagram

  Figure 8.1 shows a person cutting grass with a lawnmower. The lawnmower is connected to the mains supply of $230\text{ V}$. The power of the lawnmower is $1200\text{ W}$.

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• Question 7Oct/Nov 2025, paper 42Structured9 marks

  A circuit consists of an a.c. supply and two lamps. The lamps are connected in parallel.

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• Question 26May/June 2024, paper 12Multiple choice1 mark

  There is a current $I$ in a resistor of resistance $R$. The potential difference (p.d.) across the resistor is $V$. Which equation gives the power $P$ dissipated by the resistor?

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• Question 33May/June 2023, paper 13Multiple choice1 markHas a diagram

  How is electricity transmitted over large distances and why is it transmitted in this way?

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• Question 27May/June 2025, paper 11Multiple choice1 markHas a diagram

  The table gives data for four different electrical devices. Which device develops the greatest power?

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• Question 27May/June 2024, paper 13Multiple choice1 mark

  There is a current $I$ in a resistor for a time $t$. The potential difference (p.d) across the resistor is $V$. What does the product $IVt$ represent?

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