Physics (AS & A Level) · May / June 2016 · Paper 12 · Question 34
9702Resistance and resistivity
Which equation is used to define resistance?
- Aenergy = (current)² × resistance × time
- Bpotential difference = current × resistance
- Cpower = (current)² × resistance
- Dresistivity = resistance × area ÷ length
As printed in the paper
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Correct answer: B. potential difference = current × resistance
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