Write an expression for the total charge on one of the plates of the capacitor. Is this total charge greater than, less than, or equal to the total charge on one of the original plates?
http://imgur.com/enJ1wMy (It won't let me paste the image so this is the best I could do)
Determine the charge density on the plates. Explain.
σ = Q/A
Q = C/V
The Attempt at a Solution
For the first problem I came up with Q = C/V which is (εA/d)(Qd/εA) = Q which must be wrong so I must be mixing up equations here.
For the second question I simply said σ = Q/A since that is what we got in recitation, however, I really don't know if that is correct and why that is correct.
Thanks in advance!!