Question

When the current in a coil changes from 2 amp. to 4 amp. in
0.05 sec., an e.m.f. of 8 volt is induced in the coil. The
coefficient of self inductance of the coil is
(a) 0.1 henry (b) 0.2 henry
(c) 0.4 henry (d) 0.8 henry

Answer 1

Answer:

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Answer 2

Answer:

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Explanation:

option b is your right answer