A coil has 400 turns and self-inductance 4.80 mH. The current in the coil varies with time according to i = (680 mA) cos (πt/0.0250 s). (a) What is the maximum emf induced in the coil? (b) What is the maximum average flux through each turn of the coil? (c)At t = 0.0180 s, what is the magnitude of the induced emf?
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