Two bulbs B1 and B2 have ratings 100V, 25W and 200V , 50W respectively are connected in series and the combination is connected to a 50V supply. Then the power consumed by the combination is
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answer is 3.
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Detailed Solution
R1=v12p1 and R2=v22p2, Re=R1+R2=v12p1 +v22p2∴p=v2Re=v2v12p1+v22p2=502100225+200250W=2.08W