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A circular coil of radius 20 cm, 500 turns and resistance 4`Omega` is placed with its plane perpendicular to the horizontal component of the earth's magnetic field. It is rotated about its vertical diameter through `180^@` in 0.25 s. Estimate the magnitudes of the emf and current induced in the coil. Horizontal component of the earth's magnetic field at the place is `3.0xx10^(-5)` T.

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The correct Answer is:
`epsilon=15.2xx10^(-3)V`, I=3.8 mA
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