An avarage induced e.m.f. of 1 V appears in a coil when the current in it is changed from 10 A in one direction to 10A in opposite direction in 0.5 sec. Self inductance of the coil is
Options
(a) 50 mH
(b) 25 mH
(c) 100 mH
(d) 75 mH
Correct Answer:
25 mH
Explanation:
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