1. The problem statement, all variables and given/known data Determine the value of the current labeled i and the voltage labeled v at t=0+, t= 1.5 ms, and t = 3.0 ms. 2. Relevant equations Ohm's law: v = i *r Decay in source free RC Circuit v(t) = v@0 * e^(-t/RC) 3. The attempt at a solution i(0-) = 0.1 A. Therefore, v across 200 ohm = 200* 0.1 = 20 V Since no current flows through capacitor with constant dc current, v across capacitor = 20 V @ t < 0 v across capacitor cannot change immediately as it would require infinite power so v across capacitor @ t = 0 = 20 V Here's where the confusion is: Should I include the 200 ohm resistor in my RC circuit? Why or why not? Also, will my circuit be a source free RC circuit? Also, what will be the current i through the 200 ohm resistor when t>0? My last question is a theoretical one: Can a current through a resistor change immediately at one instant of time?