Hi, thanks in advance to all who help a) Determine the time constant for charging the capacitor in the circuit given. b) what is the maximum charge on the capacitor? R1 ______vvvv____________ | | | | < | E R2 > C | | | |______________|______| E = emf and C is the capacitor, sorry for the poor illustration. Mentor's edit: Here's a better illustration: For a, I've determined the equivalent resistance of parallel resistors to be (1/R1 + 1/R2)^-1 = R1R2/(R1+R2), thus the time constant would be tau = CReq = CR1R2/(R1+R2) For b) I have a feeling Qmax for the capacitor will be Qmax = CV where V is the voltage across R2 since R2 and C are parallel, but I can't figure out V across R2 in terms of E, R1, R2, C. Can anyone help? Thanks again.