MGIMS WARDHA MGIMS WARDHA Solved Paper-2011

  • question_answer
    A potential difference V is applied the ends of a copper wire of length\[l\]and diameter d. On doubling only d, drift velocity

    A)  becomes two times

    B)  becomes half

    C)  does not change

    D)  becomes one-fourth

    Correct Answer: C

    Solution :

                     Drift velocity, \[{{v}_{d}}=\frac{V}{\rho \ln e}\]\[{{v}_{d}}\]does not depend upon diameter.


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