Physics 9702 · AS & A Level · Electric current

Electric current — practice question

Electrons travel through a vacuum from one metal plate to a different metal plate. This produces an electric current of $48\,\mu\text{A}$ between the plates. How many electrons are released from the first plate in a time of $5.0$ minutes?

  • A$1.4 \times 10^{4}$
  • B$1.5 \times 10^{15}$
  • C$1.8 \times 10^{16}$
  • D$9.0 \times 10^{16}$

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