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Q.

Two bulbs which consume powers P1, and P2, are connected in series. The power consumed by the combination is

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a

P1, + P2,

b

P1P2

c

P1P2P1+P2

d

2P1P2P1+P2

answer is C.

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Detailed Solution

P1=V2R1 and P2=V2R2In series. R =  R1 +R2∴ P=V2R1+R2=V2V2P1+V2P2=P1P2P1+P2
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