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NEET 2010
Exam
NEET
Year
2010
Subject
Physics
Chapter
Electrostatics

NEET 2010 · Physics · Electrostatics

A square surface of side L metre in the plane of the paper is...

A square surface of side LL metre in the plane of the paper is placed in a uniform electric field EE (volt/m) acting along the same place at an angle θ\theta with the horizontal side of the square as shown in figure. The electric flux linked to the surface in unit of V−mV-m, is A square surface of side L metre in the plane of the paper is placed in a uniform electric field E (volt/m) acting

Options

  1. AEL2\mathrm{EL}^2
  2. BEL2cos⁡θ\mathrm{EL}^2 \cos \theta
  3. CEL2sin⁡θ\mathrm{EL}^2 \sin \theta
  4. D0

Correct answer

D. 0

Step-by-step solution

Flux of electric field E⃗\vec{E} through any area AA is defined as ϕ=E⋅Acos⁡θ\phi=\mathrm{E} \cdot \mathrm{A} \cos \theta or ϕ=E→⋅A→=0\phi=\overrightarrow{\mathrm{E}} \cdot \overrightarrow{\mathrm{A}}=0 the lines are parallel to the surface.
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