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BVP Medical BVP Medical Solved Paper-2012

  • question_answer
    An AC is represented by  \[0.3m/{{s}^{2}}\] V and is applied over a resistance of \[-0.3m/{{s}^{2}}\]. The heat produced in 7 min is

    A)  \[4:1\]                 

    B)  \[1:3\]

    C)  \[3:1\]                 

    D)  \[1:9\]

    Correct Answer: B

    Solution :

                    \[H=\frac{I_{x}^{2}RT}{J}cal\] \[=\frac{{{(\sqrt{2})}^{2}}\times 110\times 7\times 60}{4.2}\]                                 \[\left( \because {{I}_{rms}}=\frac{{{I}_{0}}}{\sqrt{2}}=\frac{220/110}{\sqrt{2}}=\sqrt{2} \right)\] \[=2.2\times {{10}^{3}}cal\]


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