WB JEE Medical WB JEE Medical Solved Paper-2013

  • question_answer
    A wire of resistance \[4\Omega \] is stretched to twice   its   original   length.   The resistance of stretched wire would be

    A)  \[2\Omega \]

    B)  \[4\Omega \]

    C)  \[8\Omega \]

    D)  \[16\Omega \]

    Correct Answer: D

    Solution :

      As\[R={{n}^{2}}R={{2}^{2}}\times 4=4\times 4=16\,\Omega \]


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