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

  • question_answer The resistor of resistance 'R' is connected to 25 V supply and heat produced in it is 25 J/sec. The value of R is [Orissa PMT 2004]

    A)            \[225\Omega \]                        

    B)            \[1\Omega \]

    C)            \[25\Omega \]                          

    D)            \[50\Omega \]

    Correct Answer: C

    Solution :

               \[P=\frac{{{V}^{2}}}{R}\] Þ \[R=\frac{{{V}^{2}}}{P}=\frac{25\times 25}{25}=25\,\Omega \]

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