Question 1:

SW1 V1 V2 + + C R1 R2 The circuit shows a capacitor, two ideal batteries, two resistors and a switch. Initally the switch has been open for a long time. If it is then closed for a long time, what is the change in the charge on the capacitor? Assume that R1 = 110 0, R2 = 400 0, C = 600 /F, V1 = 6 V and V2 = 9V. The change in the charge on the capacitor is equal to uC