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Physics · May / June 2022 · Paper 12 · Question 33

5054Electromotive force and potential difference

Charge of 0.40 C passes through a resistor in 1.0 s. In 2.0 s, 20 J of thermal energy is produced in the resistor. What is the potential difference across the resistor?

  1. A0.020 V
  2. B0.040 V
  3. C25 V
  4. D50 V

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Correct answer: C. 25 V

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