College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 10

The circuit in Figure P18.60 contains two resistors, R 1 = 2.0 k and R 2 = 3.0 k , and two capacitors, C 1 = 2.0 µ F and C 2 = 3.0 µ F, connected to a battery with emf = 120 V. If there are no charges on the capacitors before switch S is closed, determine the charges q 1 and q 2 on capacitors C 1 and C 2 , respectively, as functions of time, after the switch is closed. Hint: First reconstruct the circuit so that it becomes a simple RC circuit containing a single resistor and single capacitor in series, connected to the battery, and then determine the total charge q stored in the circuit.