1.

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.

Answer»

Solution :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.


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