Physics (AS & A Level) · Feb / March 2025 · Paper 12 · Question 32
9702Resistance and resistivity
A thermistor is connected to a cell with negligible internal resistance. Which graph shows the variation with temperature of power, P, dissipated in the thermistor?
- AGraph A: P increases with temperature / °C (upward curve)
- BGraph B: P decreases with temperature / °C (downward curve)
- CGraph C: P constant with temperature / °C (horizontal line)
- DGraph D: P decreases linearly with temperature / °C (straight line)
As printed in the paper
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Correct answer: A. Graph A: P increases with temperature / °C (upward curve)
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