RC transients practice problems
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Read the RC-transient class notes.

For the circuit shown,

• R₁ = 1 kΩ
• R₂ = 4.7 kΩ
• R₃ = 2.7 kΩ
• C = 22 μF

In the RC circuit, the source current has been at an initial of I_i = -18 mA for a long time. At t = 0, the source current abruptly jumps to I_f = 24 mA.

Determine the expression for the capacitor voltage as a function of time, for t > 0.

Answer