What is the potential difference across the capacitor?

Netsurfer733

1. The problem statement, all variables and given/known data

"Two 2.1cm x 2.1cm plates that form a parallel-plate capacitor are charged to +- 0.705 nC. What is the potential difference across the capacitor if the spacing between the plates is 1.20mm? "

2. Relevant equations

C = Q/V

C = epsilon * A/d

3. The attempt at a solution

I figure epsilon = 8.85 x 10^-12 F/m
A = area of plates = 0.021 * 0.021 m^2
d = separation of plates = 1.2 x 10^-3 m

And so I've tried plugging it all in and I still didn't get it right. In my attempts, I've tried answering with 2.17, 3.25*10^-12 , and 2.16*10^11 with no luck. Can anyone point out where I've gone wrong?

ehild

Have you calculated the potential difference or just tried numbers in random? Show your calculations in detail.

ehild

Netsurfer733

I did - but I apparently suffered a flurry of math errors. I got it anyway :)