In this video, i give the method of solution for an electrostatics question that is required to find out-work required to move a charge near a line of charge.
(a) use gauss’ law to derive the expression for the electric field (
e
)
due to a straight uniformly charged infinite line of charge density
c/m.
(b) draw a graph to show the variation of e with perpendicular
distance r from the line of charge.
(c) find the work done in bringing a charge q from perpendicular
distance r1 to r2 (r2 > r1).
this video is for part c only

IIT JEE Mains, Mathematics, Physics