R₁ = 10.0 k, R₂ = 15.0 k, C=0.400 μF, and the ideal battery has emf E=20.0 V. First, the switch is closed a long time so that the steady state is reached. voltage across the capacitor in the steady-state condition is 12V. Suppose the switch is opened at time t=0. What is the charge on the capacitor at t = 4.00 ms?

R₁ = 10.0 k, R₂ = 15.0 k, C=0.400 μF, and the ideal battery has emf E=20.0 V. First, the switch is closed a long time so that the steady state is reached. voltage across the capacitor in the steady-state condition is 12V. Suppose the switch is opened at time t=0. What is the charge on the capacitor at t = 4.00 ms?