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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
    Consider the circuit given here with the following parameters            E.M.F. of the cell = 12 V. Internal resistance of the cell \[=2\,\Omega \]. Resistance \[R=4\,\Omega \]            Which one of the following statements in true

    A)                    Rate of energy loss in the source is = 8 W

    B)                    Rate of energy conversion in the source is 16 W

    C)                    Power output in is = 8 W

    D)                    Potential drop across R is = 16 V

    Correct Answer: A

    Solution :

               \[i=\frac{12}{(4+2)}=2A\] Energy loss inside the source \[={{i}^{2}}r\]\[={{(2)}^{2}}\times 2=8W\]


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