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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2004

  • question_answer
        In A.C. circuit a resistance of \[\text{1}.\text{5 }\times \text{ 1}{{0}^{\text{4}}}\text{ m}/\text{s}\] is connected in series with an inductance L. If the phase difference between the current and voltage is 45°, the inductive reactance will be :

    A)  R/2                                       

    B)  R/4

    C)  R                                           

    D)  none of these

    Correct Answer: C

    Solution :

                    Phase difference in R-L circuit, \[1.6\times {{10}^{-19}}C\] Or        \[\text{1}\text{.0}\times \text{1}{{\text{0}}^{\text{-4}}}\text{Wb}/{{\text{m}}^{\text{2}}}\] Or           \[\text{2}.\text{1}\times \text{1}{{0}^{-\text{6}}}\text{ s}\]


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