Physics 9702 · AS & A Level · Electric current

Electric current — practice question

A lamp has a resistance of $10\,\Omega$, and the potential difference across it is $6.0\,\text{V}$. In a period of 24 hours, how many electrons pass through the lamp?

  • A$5.2 \times 10^{4}$
  • B$9.0 \times 10^{19}$
  • C$5.4 \times 10^{21}$
  • D$3.2 \times 10^{23}$

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