Question

Two 11--diameter charged disks face each other, 25 apart. Both disks are charged to - 80 . What is the electric field strength a point on the axis 5.0 from one disk between them?

Answer 1

would you use the E_disk for this problem and just add each side?\[E _{disk}=\eta/2\pi \epsilon _{0})*[1-x/\sqrt{x ^{2}+R ^{2}}]\]
where R=radius of disk