Question

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

1A

B

2A

C

4A

D

5A

Medium

Solution

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Correct option is
D

5A

Hint : A fuse wire should be able pass that amount of current which the appliance requires

Step 1 : Find the maximum current that the appliance requires
           Given, Power & Voltage
           
           So, 
           
           The fuse wire should be able to pass at least  current.
So, the rating should be .

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