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Q#1 Transient Analysis GATE EC 2023 MCQ +2 marks -0.66 marks

The switch  was closed and  was open for a long time. At , switch  is opened and  is closed, simultaneously. The value of , in amperes, is

1

-1

0.2

0.8

Explanation:

At ;  switch  closed, switch  opened, hence the circuit is in steady state.

At steady state inductance behaves as short circuit

At steady state capacitance behaves as open circuit

 

 

At ; switch  opened, switch  closed, the circuit can be redrawn as

 

By applying  :

 

 

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