Physics (AS & A Level) · May / June 2025 · Paper 14 · Question 29
9702Electric current
The resistance of a lamp is 10 Ω and the potential difference across it is 6.0 V. How many electrons pass through the lamp in a time of 24 hours?
- A5.2 × 10⁴
- B9.0 × 10¹⁹
- C5.4 × 10²¹
- D3.2 × 10²³
As printed in the paper
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Correct answer: D. 3.2 × 10²³
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