Physics (AS & A Level) · Oct / Nov 2016 · Paper 13 · Question 33
9702Potential difference and power
An electric kettle is marked 3.10 kW. It is used with an electrical supply of 240 V. What is the electric current in the kettle and what is the kettle’s electrical resistance when working?
- Acurrent 0.0129 A, resistance 18 600 Ω
- Bcurrent 0.0770 A, resistance 3100 Ω
- Ccurrent 12.9 A, resistance 18.6 Ω
- Dcurrent 12.9 A, resistance 3100 Ω
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Correct answer: C. current 12.9 A, resistance 18.6 Ω
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