An electric field over an infinite sheet is a type of electric field that is present above and below an infinitely large, flat surface that has a uniform distribution of charge.
The electric field strength for an infinite sheet is calculated by taking the surface charge density (σ) and dividing it by 2ε₀, where ε₀ is the permittivity of free space. This results in an electric field that is constant and perpendicular to the surface of the sheet.
No, the electric field over an infinite sheet is not affected by the distance from the sheet as long as the distance is not close enough to consider the thickness of the sheet. This is because the sheet is considered to be infinitely thin, so the distance does not impact the electric field strength.
The electric field over an infinite sheet is constant and uniform, whereas the electric field of a point charge decreases as the distance from the charge increases. Additionally, the electric field over an infinite sheet is always perpendicular to the surface, while the electric field of a point charge is radial.
An electric field over an infinite sheet is used in various electronic devices, such as capacitors and parallel plate electrodes. It is also used in theoretical calculations and models for understanding electric fields and their behavior in different scenarios.