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Physics (AS & A Level) · Oct / Nov 2022 · Paper 13 · Question 16

9702Energy conservation

Which expression could be used to calculate power?

  1. A\frac{(\text{current})^2}{\text{resistance}}
  2. B\frac{\text{force} \times \text{displacement}}{\text{time}}
  3. C\text{current} \times (\text{resistance})^2
  4. D\frac{\text{weight}}{\text{time}}

As printed in the paper

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Correct answer: B. \frac{\text{force} \times \text{displacement}}{\text{time}}

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