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Q.

The inductance of a coil in which a current of 0.1 A increasing at the rate of 0.5 A/s represents a power flow of  0.5 watt is

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a

2 H

b

4 H

c

8 H

d

10 H

answer is D.

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Detailed Solution

energy =12Li2  power =ddt12Li2  = Lididt =0.5,    L=0.510.510.1 = 10
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