The current in a coil of self inductance 5H is increasing according to i=2sint2 . The amount of energy spent during the period when current changes from 0 to 2 ampere is
A
10 joule
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B
5 joule
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C
100 joule
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D
2 joule
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Solution
The correct option is B 10 joule i=2sin(t2) e=−Ldidt=−4Ltcos(t2)
Amount of energy spent during the period when current changes from 0 to 2 ampere,