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Coulomb's Law - Mathematical Form

Q73. An induc...

Question

Q73. An inductor has the coefficient of self induction 40 mH. What is the energy stored in it when a current of 2A is passed through it?

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Solution

$D e a r S t u d e n t, G i v e n, L = 40 m H = 40 \times 10^{- 3} H, I = 2 A E n e r g y s t o r e d i n a n i n d u c t o r i s, E = \frac{1}{2} L I^{2} = \frac{1}{2} \times 40 \times 10^{- 3} \times 4 = 80 \times 10^{- 3} J R e g a r d s .$

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