CBSE CLASS 12 PHYSICS

Question

An infinitely large thin plane sheet has a uniform surface charge density
+σ. Obtain the expression for the amount of work done in bringing a
point charge q from infinity to a point, distant r, in front of the charged
plane sheet.

Answer 1

Let PQRS is an infinitely plane charged sheet and +σ be the distribution of charge over the sheet.Let the charge q is bringing from infinity to the distance r from the sheet.

Then, Electric field at the distant r from the sheet