1. The problem statement, all variables and given/known data A 0.1[A] current is charging a capacitor that has square plates 5cm on each side. The plate separation is 4mm. Find (a) the time rate of change of the electric flux between the plates and (b) the displacement current between the plates. 3. The attempt at a solution So I had hints from the teacher, and got the answer but I'm a little confused as to what I did.. Could someone help me out? Why does the 4mm not come into play? or the 5cm? Is I=Id always? Usually? What was the point taking double integral of CurlB? And what equals muI+muId?