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?
- 1 A
- 2 A
- 4 A
- 5 A
Here, power = P = 1 KW = 1000 W
Voltage = V = 220 V
Current = I = ?
Now, I = P/V = 1000/220 = 4.5 A
Now, rating of fuse wire must be slightly greater than 4.5 A i.e., 5 A.
The correct option is D.