The combined resistance R = 4 M-ohm. Solve for the current i(t) for this circuit for t>0. Express a function of time with the term t, with units of microAmperes
Assume R1 = 1 M-ohm, R2 = 3 M-ohm, and C = 1.5 F. Also take the initial voltage across the capacitance to be VC(0) = 4 V. The voltage source VS has a voltage of 9 etV. The switch is closed at time t=0.