RL transient practice problems
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Read the RL-transient class notes.

For the circuit shown,

• R = 180 Ω
• L = 22 mH

For the RL circuit, the source has been at an initial voltage value of V_i = 21 V for a long time.
At t = 0, the source voltage abruptly drops to V_f = 5 V.

Determine the expression for the inductor current as a function of time, for t > 0.

Answer