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JEE Main & Advanced Physics Electro Magnetic Induction Question Bank Faraday's and Lenz's Law

  • question_answer
    The magnetic flux linked with a coil is given by an equation \[\varphi \] (in webers) = \[8{{t}^{2}}+3t+5\]. The induced e.m.f. in the coil at the fourth second will be                                                       [MP PET 1990]

    A)            16 units                                  

    B)            39 units

    C)            67 units                                  

    D)            145 units

    Correct Answer: C

    Solution :

               \[e=-\frac{d\varphi }{dt}=-\left( 16t+3 \right)=-67units\]


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