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A long solcnoid of length 1m, cross-sect...

A long solcnoid of length 1m, cross-sectional area `10cm^(2)`, having 1000 turns has wound about its centre a small coil of 20 turns. Compute the mutual inductance of the pair of solenoid and the coil . What is the induced EMF in the coil when the current in the solenoid changes at the rate of `10 A//s`?

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The correct Answer is:
`25I mu V`
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