# Electric Flux Definition

Learn about the definition of electric flux, how to calculate it, examples, case studies like Gauss’s Law, and its importance in electromagnetism.

## What is Electric Flux?

Electric flux is a concept in electromagnetism that describes the flow of an electric field through a given surface. It is defined as the amount of electric field passing through a surface per unit area. In simpler terms, electric flux measures the quantity of electric field lines that pass through a closed surface.

## Calculating Electric Flux

Electric flux can be calculated using the formula:

Φ = E.A.cosθ

• E is the electric field
• A is the area of the surface
• θ is the angle between the normal to the surface and the direction of the electric field

## Examples of Electric Flux

One common example of electric flux is a charged sphere. If you place a closed surface around the sphere, the electric field lines passing through the surface would determine the electric flux.

## Case Study: Gauss’s Law

Gauss’s Law is a fundamental principle in electromagnetism that relates electric flux to the charge enclosed by a surface. It states that the total electric flux through a closed surface is equal to the charge enclosed by the surface divided by the permittivity of free space.

## Importance of Electric Flux

Electric flux is essential in understanding the behavior of electric fields and charges. It helps in calculating the strength and direction of electric fields and plays a crucial role in various applications, including circuit design, electromagnetic induction, and electrical engineering.