ElectroMagnetic InductionHard
Question
In the given arrangement, the loop is moved with constant velocity v in a uniform magnetic field B in a restricted region of width a. The time for which the emf is induced in the circuit is:
Options
A.
B.
C.
D.
Solution
When the loop enters the magnetic field the magnetic flux in it changes till it covers a distance ′a′. Hence the EMF induced in the surface after that flux in it remains constant till its back portion has not entered in magnetic field. No emf is induced during this time.when it is out of magnetic field the magnetic flux in it decreases. EMF is again induced in the circuit hence total time for which emf is induced is
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