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Electrical Engineering/How to represent back emf in an inductor.


Ben wrote at 2013-01-19 04:18:26
I can answer your question:

The coil is trying to maintain the current so the coil is acting as a voltage source (not acting as a passive device). So for voltage source, current coming out from (+) terminal; therefore bottom terminal will go positive. (think it is trying to source out current).

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