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

  • question_answer A \[5{}^\circ C\] rise in temperature is observed in a conductor by passing a current. When the current is doubled the rise in temperature will be approximately                                            [CBSE PMT 1998]

    A)            \[16{}^\circ C\]                    

    B)            \[10{}^\circ C\]

    C)            \[20{}^\circ C\]                    

    D)            \[12{}^\circ C\]

    Correct Answer: C

    Solution :

               Since \[H\propto {{i}^{2}},\] so on doubling the current, the heat produced and hence the rise in temperature becomes four times.

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