A condenser of capacity 6 μF is fully charged using a 6-volt battery. The battery is removed and a resistanceless 0.2 mH inductor is connected across the condenser. The current which is flowing through the inductor when one-third of the total energy is in the magnetic field of the inductor is :-
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Question

A condenser of capacity 6 μF is fully charged using a 6-volt battery. The battery is removed and a resistanceless 0.2 mH inductor is connected across the condenser. The current which is flowing through the inductor when one-third of the total energy is in the magnetic field of the inductor is :-

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G1 Physics · Accepted Answer

Use εₗ=−L(dI/dt), U=½LI², and for mutual induction ε₂=−M(dI₁/dt). Applying the stated geometry/circuit condition gives 0.6 A A−C Circuits.