Question

Electric field intensity due to infinite sheet of charge σ is (a) Zero (b) Unity (c) σ/ε (d) σ/2ε This question was addressed to me in an interview. I want to ask this question from Electric Field Intensity in section Electrostatic Fields of Electromagnetic Theory Select the correct answer from above options Electromagnetic Theory questions and answers, Electromagnetic Theory questions pdf, Electromagnetic Theory question bank, Electromagnetic Theory questions and answers pdf, mcq on Electromagnetic Theory pdf,electromagnetic theory book pdf,electromagnetic theory pdf notes,electromagnetic theory lecture notes,electromagnetic theory of light,maxwell electromagnetic theory,electromagnetic theory proposed by,electromagnetic theory engineering physics,electromagnetic theory nptel

Answer 1

Right answer is (d) σ/2ε For explanation I would say: E = σ/2ε.(1- cos α), where α = h/(√(h^2+a^2)) Here, h is the distance of the sheet from point P and a is the radius of the sheet. For infinite sheet, α = 90. Thus E = σ/2ε.