Physics 9702 · AS & A Level · Potential difference and power

Potential difference and power — practice question

An electric motor is attached to a pedal bicycle. The cyclist activates the motor for $3.0\,\text{minutes}$. A steady current of $3.5\,\text{A}$ is taken by the electric motor from a battery with a terminal voltage of $24\,\text{V}$. What is the energy supplied by the battery?

  • A$84\,\text{J}$
  • B$250\,\text{J}$
  • C$630\,\text{J}$
  • D$15000\,\text{J}$

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