An electric heater has a resistance of 10 Ω and is connected to a 220 V mains supply.

PHYSICS · Multi-part · A Level · Physics · Electricity · Electricity

Problem

An electric heater has a resistance of 10 Ω and is connected to a 220 V mains supply. (i) Calculate the electrical power of the heater. (ii) How much heat energy, in joules, is produced by the heater in 5 minutes of operation?

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