← all questions · Physics · 9702 · Paper 2
A battery of electromotive force (e.m.f.) 6.0 V and internal resistance r is connected to an external resistor of resistance 12 Ω in parallel with a thermistor X.
A charge of 2.5 kC passes through the battery.
Calculate:
• the total energy transferred by the battery
• the number of electrons that pass through the battery.
9702/02/SP/22Cambridge International AS & A Level Physics 9702 · Specimen 2022 · Paper 2 · Question 6(b)(ii)
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Suggested time: 5 min