JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2004

  • question_answer
        1.5 m long wire carries a current 5A. It experiences a force of 7.5 N when placed in a uniform magnetic field of intensity 2T. The angle between the magnetic field and direction of current is :

    A)  \[90{}^\circ \]                                  

    B) \[60{}^\circ \]

    C)  \[45{}^\circ \]                                  

    D) \[30{}^\circ \]

    Correct Answer: D

    Solution :

                    Using the relation \[3\times {{10}^{-3}}\Omega \] Or           \[\text{8}.\text{1}0\times \text{1}{{0}^{-\text{5}}}\text{ }\Omega \] Or           \[\text{4}.0\text{5}\times \text{1}{{0}^{-\text{6}}}\text{ }\Omega \] \[\text{1}\text{.35}\times \text{1}{{0}^{-8}}\text{ }\Omega \]                 Or           \[2.70\times \text{1}{{0}^{-7}}\Omega \]  


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