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JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Electric Conduction Ohms and Resistance

  • question_answer
    Two wires of the same material are given. The first wire is twice as long as the second and has twice the diameter of the second. The resistance of the first will be                                                                                          [MP PMT 1993]

    A)                    Twice of the second  

    B)            Half of the second

    C)                    Equal to the second  

    D)            Four times of the second

    Correct Answer: B

    Solution :

                 By \[R=\rho l/A\]


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