15V a. + AM 10.2. 4 t=0 um 45² 652 im + ✓ 1 ic (t) 20m F Find a mathematical expression for Vc it capacitor is initially uncharged and the switch is closed at t = 0. Sketch Vc lt). b. Assume switch has been closed for Fird an expression for ic immediately after the switch and sketch it. a long time. opening

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