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A varying current in a coil changes from 10 A to zero in 0.5 sec. If the average e.m.f induced in the coil is 220V, the self-inductance of the coil is (a) 5 H (b) 6 H (c) 11 H (d) 12 H



A varying current in a coil changes from 10 A to zero in 0.5 sec. If the average e.m.f induced in the coil is 220V, the self-inductance of the coil is


(a)    5 H  


(b)    6 H  


        (c)    11 H


(d)    12 H


Grade:10

1 Answers

Simran Bhatia
348 Points
7 years ago

(c)

Initial current (I1) = 10 A; Final current

(I2) = 0; Time (t) = 0.5 sec and induced e.m.f.

        (e) = 220 V.

Induced e.m.f. (E)

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