Gauss Law is a fundamental law of electromagnetism that relates the electric flux through a closed surface to the charge enclosed by that surface.
Gauss Law is used in physics to calculate the electric field at any point in space due to a distribution of charges. It is also used to determine the charge enclosed by a closed surface.
Gauss Law is based on the assumption of a static electric field and does not apply to time-varying fields. It also assumes that the charge distribution is spherically symmetric.
Gauss Law is used extensively in electrical engineering for the design and analysis of circuits, as well as in the development of electromagnetic devices such as motors and generators.
Yes, Gauss Law can be applied in a vacuum as long as there is a charge distribution present. However, in a vacuum, the electric field is generally due to the presence of free charges, such as electrons, rather than bound charges as in a material medium.