The electric field due to an infinite plane sheet of charge with surface charge density σ is:
A. Zero
B. σ/(2ε₀)
C. 2σ/ε₀
D. σ/ε₀
Answer: Option B
Solution (By JKSSB Mock Tests)
Using Gauss's law, for an infinite sheet, electric field E = σ/(2ε₀), directed perpendicular to the sheet. This is uniform and independent of distance from the sheet. Option A is for field near conductor surface; C and D are incorrect. Memory aid: 'Infinite sheet: E = σ/(2ε₀); conductor surface: E = σ/ε₀'. This conceptual question tests electrostatics fundamentals, crucial for competitive exams. Always distinguish between conducting and non-conacting sheets, as field expressions differ due to charge distribution.
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