Electric Flux Formula
The electric flux through a planar area is defined as the electric field times the component of the area perpendicular to the field.
Electric flux = Electric field * Area * (angle between the planar area and the electric flux)
The equation is:
Φ = E A cos(θ)
Where:
Φ: Electric Flux
A: Area
E: Electric field
θ: angle between a perpendicular vector to the area and the electric field
Electric Flux Formula Questions:
1) A planar surface has an area of 1 m2, if an electric field crosses with an angle of 30° to it, and has E= 2 V/m. What is the electric flux?
Answer:
From the formula of the electric flux,
Φ = E A cos(θ) = 2 V/m * 1 m2 * cos(30°)
Φ = 1 V m
2) A planar surface has an area of 0.25 cm2, if an electric field crosses perpendicular to it, and has E= 2 V/m. What is the electric flux?
Answer:
From the formula of the electric flux,
Φ = E A cos(θ) = 2 V/m * 2.5 * 10(-5) m2 * cos(0°)
Φ = 5*10(-5) V m
|
Related Links: |