Question

Gauss's law is valid for
A) any closed surface
B) only regular close surface
C) any open surface
D) only irregular open surfaces

Answer 1

Hint: Gauss’s Law is used to find the electric field by considering a Gaussian surface around the point where we calculate the field. Thus, the charge is caused by the charge inside the field surface.

Complete Step by step solution:
Gauss's law states that flow through any closed surface is a measure of the total charge inside. So, Gauss law is valid for closed surfaces. Gauss's law is valid only for the symmetric body charge distribution such as spherical, cylindrical, plane symmetry. It is also a valid other medium such as dielectric medium.

Hence option A is correct

Additional Information: Gauss's law states that the total electric current outside a closed surface is equal to the charge enclosed divided by the permittivity. The electric current in a region is defined as the electric field multiplied by the projected surface area in a plane and a vertical field.
The electric field is the basic concept of knowing about electricity. Generally, the electric field of a surface is calculated by applying Coulomb's law, but to calculate the distribution of electric field in a closed surface, we have to understand the concept of Gauss law. It describes the electric charge enclosed in a closed or electric charge present in the enclosed closed surface.

Notes: Electric current from any closed surface is only caused by sources (positive charges) and sinks (negative charges) of electric fields surrounded by the surface. No charge outside the surface contributes to the electric current. In addition, only electric charges can act as sources or sinks of the electric field. For example, changing the magnetic field cannot act as a source or sink of an electric field.