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Q#1 Transient Analysis GATE EE 1999 MCQ +2 marks -0 marks

In the circuit shown in figure, capacitor is initially charged to 12V. Find the mathematical expression for the voltage across the capacitor  after closing the switch at t=0

C:\Users\Ankit\Dropbox\GATE papers\EE papers\Solutions\network\Network 91-01\Network Images\69.jpg

Explanation:

The network given is shown below,

C:\Users\Ankit\Dropbox\GATE papers\EE papers\Solutions\network\Network 91-01\Network Images\69.jpg

Initially, capacitor is charged to 12V

Since, there is no active device to supply energy in the circuit.

For equivalent resistance across capacitor, the capacitor terminals are opened.

70.jpg

Since

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