Question: The switch in Figure Q . 2 ( a ) has been closed for a long time. At t = 0 , the switch opens.

The switch in Figure Q.2(a) has been closed for a long time. At t=0, the switch opens.
(i) Find the initial value of voltage Vc at t=0.
(ii) Write the expression of Vc(t) for t>0.
(iii) Sketch Vc(t) for t>0.
Figure Q.2(a)
The switch in Figure Q . 2 ( a ) has been closed

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