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Two lamps, one rated 100 W at 220 V, and...

Two lamps, one rated 100 W at 220 V, and the other 60 W at 220 V, are connected in parallel to electric mains supply. What current is drawn from the line if the supply voltage is 220 V?

Text Solution

Verified by Experts

Since, both the lamps are connected in parallel, thus, potential difference will be equal
thus, potential difference=220V
Power of one lamp, P1 = 100W
We know, P=VI or I=P/V
Thus, total current through the circuit
`I(P_1)/V+(P_2)/(V)`
`impliesI=(100W)/(220V)+(60W)/(220V)=(100+60)/(220)A=(160)/(220)A`
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