58. We treat the system as a superposition of a disk of surface charge density σ and radius R and a smaller, oppositely charged, disk of surface charge density − σ and radius r . For each of these, Eq 25-37 applies (for z> 0) V = σ 2 ε0 ³ p z 2 + R 2 − z ´ + − σ 2 ε0 ³ p z 2 +
This is the end of the preview. Sign up
access the rest of the document.