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AMU Medical AMU Solved Paper-1997

  • question_answer
    Two bulbs when connected in parallel to a source take 60 W each. The total power consumed when they are connected in series with the same source is

    A)  15 W            

    B)  30 W

    C)  60 W            

    D)  120 W

    Correct Answer: B

    Solution :

    : When bulbs are connected in series, \[P=\frac{{{P}_{1}}{{P}_{2}}}{({{P}_{1}}+{{P}_{2}})}=\frac{60\times 60}{60+60}=\frac{60\times 60}{120}=30\,W\]


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