- 49

- 0

**1. Homework Statement**

http://img231.imageshack.us/img231/7518/physicsdw3.jpg [Broken]

**2. Homework Equations**

Q=Qfinal(1-e^(-t/rc) I=Io(e^-t/rc) V=q/c T=RC

**3. The Attempt at a Solution**

A.) I think that'd it would be brighter since there is more current through the circuit but have no clue...

B.) Qfinal is .1 and Io = .2 I thought that T=RC though and I get .5, but the answer in the book RC = to -2....

D.) I thought I'd work backward for this problem. I found Ceq equal to 1200 uF. Then I did Q = V/C so Q = .0328. I know from the answer ke that Q(t) = .1(1-e^-2t) so then I get .0328 = .1(1=e^-2t) so e^-2t = .672 and then =2t = ln.672 but then i get t = .199 and the answer key says .416...

Last edited by a moderator: