Page 77 - LAPLACE TRANSFORM

5.2 RL Series circuit

Example 1 (RL series circuit)

Calculate the value of current i(t) at t = 0.2 seconds by using Laplace transform when

S1 switch is closed. (Assume that all initial condition is zero).

SOLUTION

Step 1: Analyze the circuit in the time domain using Kirchhoff’s voltage law (KVL).

VR + VL = Vs

di
Ri(t) + L = V
dt s

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