As we know, work done by an outside agency in creating some current ''I" in an inductor 'L' is 1/2LI(adsbygoogle = window.adsbygoogle || []).push({}); ^{2}. Now this result is derived by quasistatic approximation if I am not wrong. Now, I am assuming that in non quasistatic (real) scenarios, the work done by outside agency would be different(If you actually calculate by using Poynting Vector, there would be some radiation flying off ......). Am I right till here ?

My question is :Let W be the work done in charging inductor to current I in time T (at a rate of I/T amperes per second) without making qusi static approximations. Is W > 1/2LI^{2}? Also, if T approaches infinity (i.e. the rate of increasing current is too darned slow), will W approach 1/2LI^{2}?

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# I Magnetic Energy = 1/2LI^2?

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