An engineer tests a solar panel that produces a potential difference of 12 V. A lamp connected to the panel has 36 J of energy transferred to it when 3.0 C of charge passes through it. What is the potential difference across the lamp?

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Question

An engineer tests a solar panel that produces a potential difference of 12 V. A lamp connected to the panel has 36 J of energy transferred to it when 3.0 C of charge passes through it. What is the potential difference across the lamp?

Accepted Answer

12 V — Award 1 mark for correct use of V = E/Q = 36/3.0 = 12 V. A is incorrect — this divides charge by potential difference. C is incorrect — this adds values incorrectly. D is incorrect — this multiplies energy and charge.

Answer

108 V

Answer

12 V

Answer

39 V

Answer

3 V

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