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

  • question_answer Three identical resistances A, B and C are connected as shown in the given figure. The heat produced will be maximum                                                                      [MP PMT 2004]

    A)            In B                                          

    B)            In B and C

    C)            In A

    D)            Same for A, B and C

    Correct Answer: C

    Solution :

                       Resistance of A is greater than the resistance of combination of B and C, hence voltage drop across A will be greater than that across B or C. Also \[H=\frac{{{V}^{2}}t}{R}\] Þ \[H\propto {{V}^{2}}\] so \[{{H}_{A}}>({{H}_{B}}={{H}_{C}})\]        (R = constant)


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