Physics (AS & A Level) · Feb / March 2018 · Paper 12 · Question 33
9702Potential difference and power
A resistor has resistance R. When the potential difference across the resistor is V, the current in the resistor is I. The power dissipated in the resistor is P. Work W is done when charge Q flows through the resistor. What is not a valid relationship between these variables?
- AI = P/V
- BQ = W/V
- CR = P/I^2
- DR = V/P
As printed in the paper
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Correct answer: D. R = V/P
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