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

  • question_answer
    The internal resistances of two cells shown are \[0.1\,\Omega \] and \[0.3\,\Omega \]. If \[R=0.2\,\Omega \], the potential difference across the cell

    A)                    B will be zero

    B)                    A will be zero

    C)                    A and B will be 2V

    D)                    A will be \[>2V\] and B will be \[<2V\]

    Correct Answer: A

    Solution :

               Applying Kirchhoff law \[(2+2)=(0.1+0.3+0.2)i\] Þ \[i=\frac{20}{3}A\] Hence potential difference across A \[=2-0.1\times \frac{20}{3}=\frac{4}{3}V\]  (less than 2V) Potential difference across \[B=2-0.3\times \frac{20}{3}=0\]


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