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JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Self Evaluation Test - Current Electricity

  • question_answer
    The amount of charge Q passed in time t through a cross-section of a wire is \[Q=5{{t}^{2}}+3t+1.\] The value of current at time t=5 s is

    A) 9 A   

    B) 49 A

    C) 53 A

    D) None of these

    Correct Answer: C

    Solution :

    [c] \[I=\frac{dQ}{dt}=10t+3\] At t=5s, \[I=10\times 5+3=53A\]


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