An air-cored solenoid of length 50cm and area of cross-sectional `28 cm^(2)` has 200 turns and carries a current of 5.0 A. On switching off, the current decreases to zero within a time interval of 1.0 ms. Find the average emf induced across the ends of the open switch in the circuit.

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Correct Answer - 1.4 V

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