Question

Hundred watts bulb is connected to 220 voltage main supply calculate the strength of the electric current passing through the bulb in the same while visit to usa with the main supply is 110 voltage how how much current will pass through jee mains

Answer 1

Case 1

P= v * I

I=P/v

Given that p=100w ,v= 220v

Therefore,

I = 100/220

I = 0.45 A

Case 2 :

U.S.A. :- p =100w, v = 110 v

I = p/v

I =. 100/110

I = 0.9 A

I think this helps you.