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

  • question_answer
    A 50 mH coil carries a current of 2 ampere. The energy stored in joules is               [MP PET/PMT 1988; MP PET 2005]

    A)            1    

    B)            0.1

    C)            0.05                                          

    D)            0.5

    Correct Answer: B

    Solution :

               Energy stored \[E=\frac{1}{2}L{{i}^{2}}=\frac{1}{2}\times 50\times {{10}^{-3}}\times 4=0.1\ J\]


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