2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Electro Magnetic Induction

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

  • question_answer
    A coil of area \[100c{{m}^{2}}\] has 500 turns. Magnetic field of \[0.1\ weber/metr{{e}^{2}}\] is perpendicular to the coil. The field is reduced to zero in 0.1 second. The induced e.m.f. in the coil is                    [MP PMT 1991; MH CET (Med.) 1999]

    A)            1 V

    B)            5 V

    C)            50 V                                         

    D)             Zero

    Correct Answer: B

    Solution :

                       \[e=-\frac{N({{B}_{2}}-{{B}_{1}})A\cos \theta }{\Delta t}\]                    \[=-\frac{500\times (0-0.1)\times 100\times {{10}^{-4}}\cos 0}{0.1}=5V\]


You need to login to perform this action.
You will be redirected in 3 sec spinner