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

  • question_answer
    A 12 V lead accumulator is being charged using 24 V supply with an external resistance \[2\,\Omega \]. The internal resistance of the accumulator is\[1\,\Omega \]. Find the time in which it will store 360 W-hour energy.

    A)            1 hr                                          

    B)            7.5 hr

    C)            10 hr                                        

    D)            None of these

    Correct Answer: B

    Solution :

                       \[i=\frac{24-12}{3}=4\,A\],  Time of charging \[t=\frac{360\grave{\ }}{V\,.\,i}\] Þ \[t=\frac{360}{12\times 4}=7.5\,\,hours.\]


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