# Explain measurement of flux with examples

The total number of electric field lines passing a given area in a unit of time is defined as the electric flux. The electric flux formula is obtained by multiplying the electric field and the component of the area perpendicular to the field. It should be noted that electric flux is defined as the number of electric field lines that are passing through a given area in a unit of time.

### Calculation of electric flux

If the plane is normal to the flow of the electric field, the total flux is given as:
ϕp=EA

### The Formula for Electric Flux

ϕ=EACosθwhere,

• ϕ is the electric flux
• E is the electric field
• A is the area, and
• θ is the angle between a perpendicular vector to the area and the electric field

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