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Physics (AS & A Level) · Oct / Nov 2018 · Paper 13 · Question 16

9702Energy conservation

An electric kettle is rated as having an input power of 1.50 kW and an efficiency of 65.0%. The kettle is switched on for 2.00 minutes. How much energy is transferred to the water in the kettle?

  1. A0.975 kJ
  2. B117 kJ
  3. C180 kJ
  4. D277 kJ

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Correct answer: B. 117 kJ

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