24 A uniform electric field of magnitude 1.1×104 N/C is perpendicular to a square sheet with sides 2.0 m long. What is the electric flux through the sheet?

Explanation:

The electric flux through a certain surface is given by (for a uniform field):

where:

E is the magnitude of the electric field

A is the area of the surface

is the angle between the direction of the field and of the normal to the surface

In this problem, we have:

is the electric field

L = 2.0 m is the side of the sheet, so the area is

, since the electric field is perpendicular to the surface

Therefore, the electric flux is

measure their densities same density, same sub

so easy. just google the electromagnetic waves and it’ll pop up.