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
    The internal resistance of a cell of e.m.f. 12V is \[5\times {{10}^{-2}}\,\Omega \]. It is connected across an unknown resistance. Voltage across the cell, when a current of 60 A is drawn from it, is [CBSE PMT 2000]

    A)            15 V                                         

    B)            12 V

    C)            9 V

    D)            6 V

    Correct Answer: C

    Solution :

               \[V=E-ir\]= \[12-60\times 5\times {{10}^{-2}}\]= 9V.


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