Electric Flux

The electric flux Φ through a surface

• is the amount of electric field piercing the surface.

• does not depend on the area involved.

• is the electric field multiplied by the area.

• is the line integral of the electric field around the edge of the surface

The area vector for a flat surface

• is parallel to the surface and has a magnitude equal to the length of a side of the surface.

• is parallel to the surface and has a magnitude equal to the area of the surface.

• is perpendicular to the surface and has a magnitude equal to the length of a side of the surface.

• is perpendicular to the surface and has a magnitude equal to the area of the surface.

Which quantity and unit are correctly paired?

• electric field strength and N/C

• electrostatic force and electron

• electricity and Coulombs

• electricity and Coulombs

When is the flux on a surface zero?

• When it is perpendicular to an electric field

• When it is perpendicular to an electric field

• When it is at an angle to an electric field

• It is never zero in an electric field

Which among of the choices is/are not FALSE about electric flux

• Which among of the choices is/are not FALSE about electric flux

• Electric flux is the amount of charge in a certain surface.

• Electric flux is the direction of the electric field in a certain charge.

• All of the above

If the electric field lines are parallel to the vector area, the electric flux will be

• minimum

• maximum

• zero

• constant

System International unit of electric flux is

Flux will be minimum when the electric field lines to the vector area are

• parallel

• perpendicular

• at angle

• at distance

The formula to solve the electric flux is:

• Electric flux is equal to Electric Field over Area of the surface subtracted to cosine theta.

• Electric flux is equal to cosine theta over Electric field multiplied by Area of the surface

• Electric flux is equal to Area of the surface multiplied by cosine theta over Electric field.

• Electric flux is equal to Electric field multiplied by Area of the surface times cosine theta.

Which among the statement is TRUE?

• A flux flowing from inside to outside is negative

• A flux flowing from inside to outside is positive.

• A flux flowing from outside to inside is positive.

• A flux flowing from inside to outside can be negative or positive