P3.2-30 The current the inductor in Figure P3.2-30 is given by A for t ≥ 0. Determine the voltage v(t) across the 80 Ω resistor for t > 0.

Figure P 3.2-30

We can find v(t) from

We can find i_R from a junction rule of the junction above the 80 Ω resistor.

Solve for i_R

We can then find v(t)

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