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NEET Sample Paper NEET Sample Test Paper-31

  • question_answer
    For a coil the value of rate of change of flux is \[(6{{t}^{2}}+2)\]in S.I. system. Then the induced emf inside the coil at \[t=2\text{ }sec\]will be:-

    A)  24 V             

    B)  26 V                       

    C)  12V             

    D)  48 V                        

    Correct Answer: B

    Solution :

    \[\frac{d\phi }{dt}=6{{t}^{2}}+2\] \[e=-\frac{d\phi }{dt}=(6{{t}^{2}}+2)\] \[{{(e)}_{t=2}}=26\,V\]


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