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

Explanation

Power rating of electric iron =1 kW = 1000 W
V= 220 V
P = VI
`I =(P)/(V)= (1000)/(220)`
= 4.55 A
Hence, a fuse of rating 5 A can be used because it can bear the current.