In finding the electric field using Gauss Law the formula | E |= q_ k n k _ n |A| is…
Physics · JEE Main · NTA Exams — Electrostatics
In finding the electric field using Gauss Law the formula \(|\vec{E}|=\frac{q_{k n k}}{\epsilon_{n}|A|}\) is applicable. In the formula ε0 is permittivity of free space, A is the area of Gaussian surface and qenc is charge enclosed by the Gaussian surface. The equation can be used in which of the following situtation?
- Only when the Gaussian surface is an equipotential surface
- Only when \(|\vec{E}|=\) constant on the surface
- For any choice of Gaussian surface
- Only when the Gaussian surface is an equipotential surface and \(|\vec{E}|\) is constant on the surface
Answer
(B) Only when | E |= constant on the surface
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