a 28 turn coil with average diameter of 0.02 m is placed perpendicular to a magnetic field of 8000 T. if the field changes to 3000 T in 4 s, what is the magnitude of the induced emf

e = - ndfi/dt = 28 . 22/7 . 0.012 (3000- 8000)/4 =11v
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As follows

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The induced e.m.f is 11V
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