This is for an electromagnetic theory class. 1. The problem statement, all variables and given/known data Prompt can be seen here 2. Relevant equations J = I/A, J = σE, V = Ed, C = εA/d 3. The attempt at a solution I'm having trouble mostly with parts i and ii, as the rest are fairly simple to acquire after figuring out those two. Here's what I have so far: A = (b-a)L J = I/((b-a)L) dE = (I/((b-a)L))d∅ (Here I'm honestly not sure what to integrate with, however my best guess is d∅, so after integrating nothing changes) E = V/d I = (Vσ(b-a)L)/((π/2)r) At this point I'm not sure if that is the total current, or just a segment of current that needs to be integrated. Hence I don't know what to do with r. Any help would be greatly appreciated.