RL transient practice problems

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Read the RL-transient class notes.

For the circuit shown,

*R*_{1}= 1.8 kΩ*R*_{2}= 2.7 kΩ*R*_{3}= 2.7 kΩ*L*= 470 mH

For the RL circuit, the source has been at an initial voltage value of *V*_{i} = -9 V for a long time.

At *t* = 0, the source voltage abruptly jumps to *V*_{f} = 18 V.

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