Question

Fuse of 3A, 5A and 10A are available. Calculate and select the fuse for operating an electric iron of 1KW power at 220V line. ​

Answer 1

Answer:

1KW=1000W

Applying formula watt=V×I

putting the values given above then the current will be between 3A and 5A.

Therefore a fuse of 5A will be appropriate.

Answer 2

Answer:

P = 1kW=1000W

v = 220v

I = P/E

V is also referred as E

I = 1000/220

I = 4.54A

hence,

I = 5A

therefore,

the fuse of 5A can be used for it..