CALC A 0.250-H inductor carries a time-varying current
Chapter 30, Problem 30.46(choose chapter or problem)
A 0.250-H inductor carries a time-varying current given by the expression \(i=(124\mathrm{\ mA})\cos[(240\pi/\mathrm{s})t]\). (a) Find an expression for the induced emf as a function of time. Graph the current and induced emf as functions of time for t = 0 to \(t=\frac{1}{60}\mathrm{\ s}\). (b) What is the maximum emf? What is the current when the induced emf is a maximum? (c) What is the maximum current? What is the induced emf when the current is a maximum?
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