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WB JEE Medical WB JEE Medical Solved Paper-2009

  • question_answer
    An alternating current of rms value 10 A is passed through a \[12\,\Omega \]resistor. The maximum potential difference across the resistor is

    A)  20 V                                     

    B)  90 V

    C)  169.68 V                             

    D)  None of the above

    Correct Answer: C

    Solution :

                     \[{{I}_{0}}={{I}_{rms}}\times \sqrt{2}\] \[=10\sqrt{2}A\] \[\therefore \] Maximum potential difference \[={{V}_{0}}\] \[=12\times 10\sqrt{2}\] \[=120\times 14.14\] \[=169.68\,V\]


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