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Physics (AS & A Level) · Oct / Nov 2022 · Paper 12 · Question 33

9702Resistance and resistivity

The potential difference (p.d.) across a filament lamp is increased. Which statement is correct?

  1. AThe resistance of the lamp decreases because the temperature decreases.
  2. BThe resistance of the lamp decreases because the temperature increases.
  3. CThe resistance of the lamp increases because the temperature decreases.
  4. DThe resistance of the lamp increases because the temperature increases.

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Correct answer: D. The resistance of the lamp increases because the temperature increases.

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