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

Potential difference and power — practice question

An electric kettle is labelled $3.10\,\text{kW}$. It operates from an electrical supply of $240\,\text{V}$. What current flows in the kettle and what is the kettle’s electrical resistance when it is operating?

  • A$0.0129\,\text{A}$ and $18\,600\,\Omega$
  • B$0.0770\,\text{A}$ and $3100\,\Omega$
  • C$12.9\,\text{A}$ and $18.6\,\Omega$
  • D$12.9\,\text{A}$ and $3100\,\Omega$

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