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

Potential difference and power — practice question

An electric kettle has an input power rating of $1.50\,\text{kW}$ and an efficiency of $65.0\%$. It is turned on for $2.00\,\text{minutes}$. How much energy is transferred to the water in the kettle?

  • A$0.975\,\text{kJ}$
  • B$117\,\text{kJ}$
  • C$180\,\text{kJ}$
  • D$277\,\text{kJ}$

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