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

For the circuit shown,

• R = 1.2 kΩ
• C = 2.2 nF

For the RC circuit, the current source has been at an initial value of I_i = -9 mA for a long time. At t = 0, the source current abruptly jumps to I_f = 20 mA.

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

Answer