2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-66

  • question_answer
    The phase difference between the flux linkage and the induced e.m.f. in a rotating coil in a uniform magnetic field

    A) \[\pi \]                           

    B) \[\pi /2\]

    C) \[\pi /4\]                        

    D) \[\pi /6\]

    Correct Answer: B

    Solution :

    \[\phi =BA\,\cos \,\theta \] where \[\theta \] is the angle between area and field \[e=\frac{-d\phi }{dt}\,\,=\,\,-BA\,\sin \,\theta \,.\,\frac{d\theta }{dt}\,\] \[=\,\,BA\,\left( \frac{d\theta }{dt} \right)\,\cos (90+\theta )\] Here phase difference \[=\text{ }90{}^\circ .\]


You need to login to perform this action.
You will be redirected in 3 sec spinner