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Physics (AS & A Level) · Feb / March 2016 · Paper 12 · Question 33

9702Potential difference and power

A 12 V battery is charged for 20 minutes by connecting it to a source of electromotive force (e.m.f.). The battery is supplied with 7.2 × 10⁴ J of energy in this time. How much charge flows through the battery?

  1. A5.0 C
  2. B60 C
  3. C100 C
  4. D6000 C

As printed in the paper

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Correct answer: D. 6000 C

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