Physics (AS & A Level) · May / June 2023 · Paper 11 · Question 30
9702Electric current
The electric current in a metal wire is 4.0 mA. How many electrons pass a fixed point in the wire in a time of 10 hours?
- A2.5 × 10¹⁷
- B2.5 × 10²⁰
- C9.0 × 10²⁰
- D9.0 × 10²³
As printed in the paper
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Correct answer: C. 9.0 × 10²⁰
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