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Physics (AS & A Level) · Feb / March 2024 · Paper 12 · Question 34

9702Potential difference and power

A resistor dissipates 25 W of power when there is a potential difference (p.d.) of 4.0 V across it. What is the resistance of the resistor?

  1. A0.16 Ω
  2. B0.64 Ω
  3. C100 Ω
  4. D400 Ω

As printed in the paper

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Correct answer: B. 0.64 Ω

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