# An electric kettle consumes 1 kW of electric power when operated at 220 V. A fuse-wire of what rating must be used for it ?

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An electric kettle consumes 1 kW of electric power when operated at 220 V. A fuse-wire of what rating must be used for it ?
A. 1 A
B. 2 A
C. 4 A
D. 5 A

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I = (P)/(V) = (1 kW)/(220 V) = (1000 W)/(220 V) = 4.5 A. Thus, rating of fuse-wire is 5 A (which is greater than 4.5 A).

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