EE 201 Circuits G. Tuttle

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


For the circuit shown,

  • R = 82 Ω
  • L = 2.2 mH
  • IS = 22 mA

For the RL circuit, the switch has been closed for a long time, and it opens abruptly at t = 0.

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

Calculate the time when the inductor current will be equal to 2.75 mA and calculate the inductor voltage at that time.

Answer