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12th Class Physics Electro Magnetic Induction Question Bank MCQ - Electromagnetic Induction

  • question_answer
                                    What would be the coefficient of self-inductance of a coil of 100 turns, if 5A current flows through it? (Given that, magnetic flux \[=5\times {{10}^{3}}\] Maxwell)

    A) \[0.5\times {{10}^{-3}}H\]                   

    B) \[2\times {{10}^{-3}}H\]

    C) Zero                             

    D) \[{{10}^{-3}}H\]

    Correct Answer: D

    Solution :

    (d) \[{{10}^{-3}}H\] Coefficient of self inductance, \[L=\frac{N\phi }{l}\] \[=\frac{100\times 5\times {{10}^{3}}\times {{10}^{-8}}}{5}[1\,Wb={{10}^{+8}}Maxwell]\] \[={{10}^{-3}}H\]


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