Question

Explain each step involved when applying the equation of Gauss’s law of electrostatics to determine the electric field.

Answer 1

Hi

Gauss' law states that number of electric lines of force coming out of a hypothetical closed surface (like a sphere, cube etc), also known as  flux, is equal to ratio of magnitude of charge inside the surface and the electrical permittivity of the medium.

Also electric flux is equal to $\int\limits^A_0 {E} \, dA$

So if you need to find electric field at a point, put it in the equation:

$\int\limits^._. {E} \, dA = \frac{q}b$

Where b is the electrical permittivity of medium.

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