In this problem, the effect of reversing the initial current is investigated. The circuit in Fig. 1 is the same as that appearing in Fig. 2, with the only change being the direction of the initial current.
a. Write the mathematical expressions for the current iL and the voltage υL following the closing of the switch. Take careful note of the defined polarity for υL and the direction for iL.
b. Sketch the waveform of iL and υL for the entire period from initial value to steady-state level.
c. Compare the results with those of Problem 1.
Problem 1
For the circuit in Fig. 2:
a. Write the mathematical expressions for the current iL and the voltage υL following the closing of the switch. Note the magnitude and the direction of the initial current.
b. Sketch the waveform of iL and υL for the entire period from initial value to steady-state level.
FIG. 1
FIG. 2
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