P 7.5-11 Determine i(t) for t ≥ 0 for the circuit of Figure P 7.5-11a when i(0) = 25 mA and v_s(t) is the voltage shown in Figure P 7.5-11b.

Figure P 7.5-11

From the plot we have the following piecewise function of v_s(t)

Solving for i

For

At t = 1 s

For

At t = 1 s

At t = 4 s

For

At t = 4 s

At t = 9 s

For

At t = 9 s

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This page last updated on April 13, 2019