Two electric bulbs rated P1 watt V volts and P2 watt V volts are connected in parallel and V volts are applied to it. The total Power will be

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P1+P2 watt

P1P2P1+P2 watt

P1+P2P1P2 watt

answer is A.

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Detailed Solution

If resistances of bulbs are R1 and R2, respectively, then in parallel 1RP = 1R1+1R2⇒ 1V2Pp = 1V2P1+1V2P2 ⇒ PP = P1+P2

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