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?

Options

• 1A

• 2A

• 4A

• 5A

Answer 1

5A

Explanation -

Power (P) = 1 kW = 1000 W
Potential difference (V) = 220 V
We know, 
P = VI

`"I" = "P"/"V"`

`"I" = 1000/220`

I = 4.54 A

From all the given options, 5 A fuse wire is correct.