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The circuit shown in the figure is in steady state before the switch is closed at t = 0. The current iS(0+) through the switch is

The circuit shown in the figure is in steady state before the switch is closed at t = 0. The current iS(0+) through the switch is Correct Answer 1/3 A

Concept:

  • Transients are present in the network when the network is subject to changes either by changing source magnitude or by changing any circuit elements provided circuit should consist of any energy storage elements.
  • No transients occur in the resistive element.
  • Inductor doesn’t allow sudden change in current i.e. IL(0-) = IL(0+).
  • Capacitor doesn’t allow sudden change in voltage i.e. VC(0-) = VC(0+).

 Calculation:

Important Points

In the steady-state analysis 

       Before Switching                         After Switching

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