Physics (AS & A Level) · Oct / Nov 2021 · Paper 11 · Question 34
9702Resistance and resistivity
The I–V characteristics of two electrical components P and Q are shown. Which statement is correct?
- AFor a current of 0.5 A, the power dissipated in Q is double that in P.
- BFor a current of 1.9 A, the resistance of Q is approximately half that of P.
- CThe resistance of Q increases as the current in it increases.
- DP is a fixed resistor and Q is a filament lamp.
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Correct answer: A. For a current of 0.5 A, the power dissipated in Q is double that in P.
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