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JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Kirchhoff's Law, Cells

  • question_answer
    A battery of e.m.f. E and internal resistance r is connected to a variable resistor R as shown here. Which one of the following is true                                                         [MP PMT 1995]

    A)                    Potential difference across the terminals of the battery is maximum when R = r

    B)                    Power delivered to the resistor is maximum when R = r

    C)                    Current in the circuit is maximum when R = r

    D)                    Current in the circuit is maximum when \[R>>r\]

    Correct Answer: B

    Solution :

               For power to be maximum External resistance = Equivalent internal resistance of the circuit


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