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JEE Main & Advanced Physics Electro Magnetic Induction Question Bank Static EMI

  • question_answer
    In a coil of self inductance 0.5 henry, the current varies at a constant rate from zero to 10 amperes in 2 seconds. The e.m.f. generated in the coil is                              [MP PMT 1996]

    A)            10 volts                                   

    B)            5 volts

    C)            2.5 volts                                 

    D)            1.25 volts

    Correct Answer: C

    Solution :

               \[\frac{\Delta i}{\Delta t}=\frac{10}{2}=5\ A/\sec \] Þ \[e=L\frac{\Delta i}{\Delta t}=0.5\times 5=2.5\ volts\]


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