A square of side 0.5 m has movable sides. It is placed such that it's plane is perpendicular to the field of induction 0.2 T . If all the sides are allowed to move with a speed of 0.1 m/s for 4 s outwards , average induced emf is
Asked by Deepak
31st August 2018,
9:48 PM
Answered by Expert
Answer:
induced emf, 
...........(1)
...........(1)where Φ is magnetic flux, B is flux density, A is area of square loop and a is side of square loop.
at t=0 s, a = 0.5 m, e = -0.2×2×0.5×0.1 = -0.02 V
at t=4 s, a = 0.9 m, e = -0.2×2×0.9×0.1 = -0.036 V
average induced emf = -0.028 V
Answered by Expert
1st September 2018,
3:36 PM
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