Electromagnetic Induction - Result Question 29
29. A varying current in a coil changes from 10A to zero in . If the average e.m.f induced in the coil is , the self-inductance of the coil is
(a)
(b)
(c)
(d)
[1995]
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Answer:
Correct Answer: 29. (c)
Solution:
- (c) Initial current
; Final current ; Time and induced e.m.f. .
Induced e.m.f. (
or,
[where