Question

13. An electric kettle consumes 1KW of electric power when operated at 220V. a fuse wire of what rating must be used for it? [a] 1A [b]2A [c] 4A [d] 5A

Answer 1

Answer:

Power= 1KW= 1000 watts

Voltage= 220V

Therefore,

P= VI

=>1000= 220 × I

=>I= 1000/220 = 4.54

Thus,

the fuse wire rating must be used at 5A.