A water heater is used for

PHYSICS · Single correct · CBSE · Physics · Current Electricity · Current Electricity

Problem

A 2 kW2\,\text{kW} water heater is used for 30 min30\,\text{min}. Calculate the electrical energy consumed, in kJ. (a) 7.2×103  kJ7.2\times10^{3}\;\text{kJ} (b) 6.0×102  kJ6.0\times10^{2}\;\text{kJ} (c) 3.6×103  kJ3.6\times10^{3}\;\text{kJ} (d) 2.16×103  kJ2.16\times10^{3}\;\text{kJ}

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