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When three identical bulbs are connected...

When three identical bulbs are connected in series. The consumed power is 10W. If they are now connected in pa rallel then the consumed power will be:-

A

30W

B

29W

C

10/3W

D

270W

Text Solution

Verified by Experts

The correct Answer is:
B

`1/P_(eq)=1/P_(1)+1/P_(2)+1/P_(3)" "P_(eq) = P_(1)+P_(2)+P_(3)`
`implies10=P/3" "impliesP_(eq) = 3P = 3xx30 = 90 watt`
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