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NEET Sample Paper NEET Sample Test Paper-7

  • question_answer
    The emf is induced in a \[1\text{ }mH\] inductor in which the current changes from 5A to 3A in \[{{10}^{-3}}s\] is:

    A)  \[2\times {{10}^{-6}}V\]                

    B)  \[8\times {{10}^{-6}}V\]

    C)  \[2\,V\]                       

    D)  \[8\,V\]

    Correct Answer: C

    Solution :

    \[emf\,\varepsilon =-L\,\frac{dl}{dt}\] \[=-1\times {{10}^{-3}}\times \frac{3-5}{{{10}^{-3}}}=2V\]


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