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?

An electric kettle consumes

1 kW

of electric power when operated at

220 V

. A fuse wire of

4.5 A

rating must be used for it.
Firstly, calculate the max current required by the electric kettle
Given data in the problem,
Power,

P = 1 KW

= 1000 W

Voltage,

V = 220 V

By using the below formula of Power
Power,

P = V \times I

, where,

I

is current and

V

is voltage.
By rearranging the above equation,

\Rightarrow I = \frac{P}{V}

\Rightarrow I = \frac{1000}{220}

\Rightarrow I​ = 4.5 A

So, the rating of fuse wire is

4.5 A

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?