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  3. 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?

Answers (1)
D Deependra Verma

 Power: 1 kW = 1000 Watt

Power (P) = VI

Voltage = 220V

Current,  I = P/V

= 1000/220 = 4.5 A

The rating should be greater than 4.5 A in order for the kettle to work. So, 5A is the only option that satisfies the condition.

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