Question

A line charge of linear charge density λ and a large non-conducting sheet of charge density σ are placed parallel to each other as shown. Find ratio of electric field at A to that at B.

(1) \(\frac{3}{4}(\frac{λ-3σ}{λ+4σ})\)

(2) \(\frac{4}{3}(\frac{λ-3σ}{λ-4σ})\)

(3) \(\frac{2}{3}(\frac{λ-4σ}{λ-4σ})\)

(4) \(\frac{3}{2}(\frac{λ-3σ}{λ-3σ})\)

Answer 1

(2) \(\frac{4}{3}(\frac{λ-3σ}{λ-4σ})\)

= \(\frac{4}{3}(\frac{λ-3σ}{λ-4σ})\)