CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2004

  • question_answer
    The magnetic flux linked with the coil varies with time as\[\phi =3{{t}^{2}}+4t+9\]. The magnitude of the induced emf at 2 s is:

    A)  9V       

    B)                         16V

    C)  3V                         

    D)         4V

    E)  6V

    Correct Answer: B

    Solution :

    \[e=\frac{d\phi }{dt}=6t+4+0\] \[At\,t=2s,e=6\times 2+4=16V\]


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