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  1. Suppose voltage V is applied across a resistance R. The power dissipated in the resistance is P. Now the same voltage V is applied across a parallel combination of three equal resistors each of resistance R. Then the power dissipated in the second case will be

    2. A.

     P
    B.

     3P
    C.

     P/3
    D.

     2p/ 3

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    Answer : Option B

    Explanation :

    P = I2R where, I = Current, P = Electric Power, R = Resistance. Here all the resistance is put in parallel combination and in parallel combination the value of Resistance decreases and dissipation of power increase, hence 3 times more power will be dissipated(3P).

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