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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2014

  • question_answer
    A solenoid of 30 cm long is made by winding 2000 loops of wire on an iron rod whose 1 cross-section is 1.5 \[c{{m}^{2}}.\]. If the relative permeability of the iron is 6000, what is the self-inductance of the solenoid?

    A) 1.5H   

    B) 2.5H

    C) 3.5H                                      

    D) 0.5H

    Correct Answer: A

    Solution :

                    Self-inductance of the solenoid \[\text{3}.\text{18}\times \text{1}{{0}^{8}}m/s\] \[\text{3}.\text{33}\times {{10}^{\text{8}}}\text{ m}/\text{s}\] \[\theta =\text{45}{}^\circ \]                                


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