Electric flux ϕE=∫E⋅ds=∫Edscosθ =∫Edscos90∘=0.
NEET UG 2006 — Physics Electromagnetism
2006mcqeasy
A square surface of side L metres is in the plane of the paper. A uniform electric field E (volt /m), also in the plane of the paper, is limited only to the lower half of the square surface (see figure). The electric flux in SI units associated with the surface is: 
Official previous-year question
Held on 30 Apr 2006 · Verified 9 Jul 2026.
Options
- A
EL2
- B
EL2/2εo
- C
EL2/2
- D
zero
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