The newest 8 of 8 written questions. Open one to see it on the real paper.
Use your answer to (b)(ii) to calculate the total energy supplied by the battery in 1500 s. energy = J
See it on the paper →How much energy is transferred by the component in 30 minutes?
See it on the paper →Plan an investigation to find out how much (electrical) energy is required to increase the temperature of different liquids. You are provided with: • • four different liquids: water, salt solution, vegetable oil and vinegar an electric heater and power supply, assembled as shown in Fig. 4.1. power supply A V heater gla...
See it on the paper →The resistance of the variable resistor is decreased. Explain why the thermal energy output from the heating element increases.
See it on the paper →Which expression gives the energy transferred in the resistor in a time t?
See it on the paper →The power of the electric motor lifting the load is 5 kW. The crane takes 56 s to lift the load to the top of the building. Calculate the electrical energy supplied to the electric motor in this time. energy = J
See it on the paper →Use the formula E = IVt to calculate the energy E transferred from the battery when a current of 50 A flows for 1 hour. Show your working. energy = J
See it on the paper →A street is lit by eight identical sodium lamps using mains voltage of 240 V. The current in each lamp is 0.50 A. The street is lit for 12 hours during the night. Calculate the electrical energy used. Show your working. energy = J
See it on the paper →The power calculated in 7(b)(ii) is used to calculate the energy supplied by the battery in 1500 s by multiplying the power by the time. An error carried forward (ecf) was allowed for those candidates who did an incorrect calculation for the power in (b)(ii).
— Examiner report, May/June 2025, 0653/31 Q7(b)(iii) (Cambridge)
Best practice in answering planning questions is to consider the bullet points carefully and to use these to structure answers. Weaker answers only addressed one or two of the bullet points. • In this question, an apparatus was shown set-up. It was not necessary to describe this set-up in the answer. Most candidates addressed the first bullet point well, usually suggesting that a stopwatch and th...
— Examiner report, February/March 2023, 0653/62 Q4 (Cambridge)
Many candidates understood that decreasing resistance would increase current. However, very few went onto explain that thermal energy is proportional to current.
— Examiner report, October/November 2022, 0653/43 Q6(b)(ii) (Cambridge)
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