A coil has 400 turns and self-inductance 7.50 mH.The current in the coil varies with time according to i = (680 mA) cos (t/0.0250 s). (a) What is the maximum emf induced in the coil? (b) What is the maximum average flux through each turn of thecoil? (c) Att = 0.0180 s, what is the magnitude of the induced emf?
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** The given current equation is \( i(t) = (680 \, \text{mA}) \cos\left(\frac{t}{0.0250 \, \text{s}}\right) \). Thus, the maximum current is: \[ I_{\text{max}} = 680 \, \text{mA} = 0.680 \, \text{A} \] Show more…
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