JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors Question Bank Heating Effect of Current

  • question_answer In the circuit shown below, the power developed in the 6W resistor is 6 watt. The power in watts developed in the 4W resistor is                                                                [AMU (Med.) 2000]

    A)            16

    B)            9

    C)            6

    D)            4

    Correct Answer: B

    Solution :

               \[P=\frac{{{V}^{2}}}{R}\] Þ \[\frac{{{P}_{1}}}{{{P}_{2}}}=\frac{{{R}_{2}}}{{{R}_{1}}}\]Þ \[\frac{6}{{{P}_{2}}}=\frac{4}{6}=\frac{2}{3}\] Þ \[{{P}_{2}}=9\,W\]

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