The newest 18 of 18 written questions. Open one to see it on the real paper.
It takes 3.0s for the drone to rise 15m. Calculate the useful power of the drone. power
See it on the paper →The power of a car headlamp is 6.0W when the potential difference across the headlamp is 12V. Calculate the current in the car headlamp. current =
See it on the paper →The washing machine uses 2500 W of power when switched on. Calculate the current in the washing machine. current = A
See it on the paper →The kettle is used for 10 minutes. Show that the energy used is 0.50 kW h.
See it on the paper →The kettle is used for 10 minutes. Show that the energy used is 0.50 kW h.
See it on the paper →kW h costs $0.50. Calculate the cost of the energy used in (ii). cost = $
See it on the paper →The average power output of the student over the final section is 600 W. Calculate the work done by the student in 3.0 s. State the unit of your answer. work done = unit
See it on the paper →A computer projector has a power rating of 750 W. Mains potential difference is 230 V. Calculate the electric current in the projector. current = A
See it on the paper →The electromotive force (e.m.f.) of the cell is 1.5 V. Define e.m.f.
See it on the paper →State the potential difference (p.d.) between points P and Q. State the unit of your answer. p.d. = unit
See it on the paper →The tracker unit uses a battery with an electromotive force (e.m.f.) of 11 V that provides a power output of 22 mW. The battery can transfer a total charge of 24 000 C before it needs replacing. Calculate the time for which the battery operates before it needs replacing. time = s ,
See it on the paper →The solenoid has a resistance of 5.0 Ω when the current is 50 A. Calculate the power of the electromagnet. power = W
See it on the paper →The number of joules of sound energy transferred per second is shown as X J. Calculate the value of X. X = J
See it on the paper →Explain why the brightness of the lamp changes as the temperature of the thermistor increases.
See it on the paper →The electric motor in the drill has a current of 25 A when using an 18 V battery. Calculate the power output of the motor. power = W
See it on the paper →Which two quantities are used to calculate power?
See it on the paper →Calculate the current in the heating element. State the unit for your answer.
See it on the paper →Fig. 9.2 shows the electrical circuit used in the torch. Fig. 9.2 When the switch is closed, the current in the lamp is 1.8 A and the potential difference across the lamp is 3.0 V. Calculate the power output of the lamp. power = W
See it on the paper →Comprehensive responses • Some candidates correctly determined the force by dividing the power by the voltage. Limited responses • Some candidates divided the voltage by the power.
— Examiner report, February/March 2026, 0654/32 Q12(e) (Cambridge)
Many candidates correctly calculated the electrical current. The most common error was the inversion of the formula to I = V / P.
— Examiner report, May/June 2025, 0654/41 Q12(c)(i) (Cambridge)
Many candidates could not define e.m.f. and very few gained any credit. Incorrect responses included electromotive force, current flowing through the circuit, force in volts, voltage flowing through the circuit and the power of the cell.
— Examiner report, May/June 2025, 0654/43 Q12(a)(i) (Cambridge)
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