two lamps one rated 100 watt;220 volt and the other 60watt;220 volt are connected in parallel to electric mains supply find the current drawn by two bulbs from the line if the supply voltage is 220 volt
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Both the bulbs are connected in parallel. Therefore, potential difference across each of them will be same that is 220 V, Current drawn by the bulb of rating 100 W is given by
I=P/V
=100/220=0.4545...A
Similarly, current drawn by the bulb of rating 60 W is given by
I=P/V
=60/220=0.2727...A
∴ the total current drawn from the line =0.4545+0.2727=0.727A
I=P/V
=100/220=0.4545...A
Similarly, current drawn by the bulb of rating 60 W is given by
I=P/V
=60/220=0.2727...A
∴ the total current drawn from the line =0.4545+0.2727=0.727A
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