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NEET Sample Paper NEET Sample Test Paper-53

  • question_answer
    In an ac circuit, the voltage applied is \[E={{E}_{0}}\] sin cot. The resulting current in the circuit is\[I={{I}_{0}}\,sin\left( \omega t-\pi /2 \right)\]. The power consumption in the circuit is-

    A) \[\sqrt{2}\,{{E}_{0}}{{I}_{0}}\]           

    B) \[\,\frac{{{E}_{0}}{{I}_{0}}}{\sqrt{2}}\]

    C) \[\,\frac{{{E}_{0}}{{I}_{0}}}{2}\]                   

    D) \[zero\]

    Correct Answer: D

    Solution :

    \[E={{E}_{0}}\text{ }sin\,\omega t\] \[I={{I}_{0}}\text{ }sin\left( \omega t-\pi /2 \right)\] \[phase\text{ }difference=\pi /2\] \[P={{E}_{rms}}\text{ }{{I}_{rms}}\,\cos \pi /2=\text{ }0\]


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