Question

Gauss law helps in

• A. determination of electric force between point charges
• B. situations where Coulombs law fails
• C. determination of electric field due to symmetric charge distributions
• D. determining electric potential due to symmetric charge distributions

Answer 1

Answer: (C)

determination of electric field due to symmetric charge distributions

Answer 2

Gauss' law helps in the determination of the electric field due to symmetric charge distribution.

The Gauss Theorem

Net flux through a closed surface is directly proportional to the net charge in the volume enclosed by the closed surface.

ϕ=E⋅dS=$\frac{q_{net}}{ \epsilon_0}$

Gauss's theorem relates the ‘flow’ of electric field lines (flux) to charges within the enclosed surface. Net electric flow is always zero if no charges are contained by a surface. The number of electric field lines entering the surface equals the number of field lines ejecting from it.