Q Two lamp one is rated 100 watts and 200 volt and other 60 watt and 220 volt are connected in parallel combination to a 220 volt battery . Find the current drawn from the supply line ?
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Solution:
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
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
Ayankhan250:
thanks
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