Assume in Problem that the value of the voltage across the inductor at t = 0 is -68 V inst...

Assume in Problem that the value of the voltage across the inductor at t = 0 is -68 V instead of 28 V.

a) Find the numerical expressions for i and v for t ≥ 0.

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b) Specify the time intervals when the inductor is storing energy and the time intervals when the inductor is delivering energy.

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c) Show that the total energy extracted from the inductor is equal to the total energy stored.

Problem

The current in a 20 mH inductor is known to be

The voltage across the inductor (passive sign convention) is 28 V at t = 0.

a) Find the expression for the voltage across the inductor for t > 0.

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b) Find the time, greater than zero, when the power at the terminals of the inductor is zero.