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NEET Sample Paper NEET Sample Test Paper-59

  • question_answer
    A rectangular coil of 20 turns and cross section area \[25c{{m}^{2}}\] has a resistance of 100Q. If a magnetic field which is perpendicular to the plane of the coil changes at a rate of 1000T/s, the current in the coil is:

    A) 1A                               

    B) 50A  

    C) 0.5A                            

    D) 5A

    Correct Answer: C

    Solution :

    [c] \[emf\,=E=n\frac{d(BA)}{dt}\] \[e\,=20\times 1000\times 25\times {{10}^{-4}}\] \[e=50V\] \[I=\frac{e}{R}=\frac{50}{100}=0.5A\]


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