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Physics (AS & A Level) · Oct / Nov 2023 · Paper 13 · Question 32

9702Resistance and resistivity

The resistance of a filament lamp increases as the current in it increases. What is the reason for this?

  1. AThe charge of each charge carrier increases.
  2. BThe potential difference across the filament decreases.
  3. CThe power dissipated by the filament decreases.
  4. DThe temperature of the filament increases.

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Correct answer: D. The temperature of the filament increases.

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