Electric Flux and Gauss's Law Questionnaire

What is electric flux?

• The electric field strength

• The flow of electric charge

• The product of electric field and area

• The potential difference across a conductor

Electric flux is measured in what SI unit?

• Volts

• Newtons

• Coulombs

• Newton-meters squared per Coulomb

Electric field lines are pointed to the left. What should be the direction of the area vector for the electric flux to be positive and maximum?

• Upward

• To the left

• To the right

• Downward

According to Gauss's law, electric flux is related to what?

• Electric field

• Electric charge

• Electric current

• Electric potential

Answer explanation

What is the relationship between the net electric flux and the enclosed charge in Gauss's law?

• No relationship

• Directly proportional

• Inversely proportional

• Exponential relationship

In what types of surfaces can Gauss's law be applied?

• All surfaces

• Only flat surfaces

• Only spherical surfaces

• Only cylindrical surfaces

What is the alternative term for the closed surface in Gauss's law?

• Gauss surface

• Faraday surface

• Gaussian surface

• Ampere's surface

When is the electric flux through a closed surface with no enclosed charge zero?

• It is always zero.

• Only for a sphere

• Only for a flat surface

• Only when the electric field is zero

Under what condition is the electric flux through a closed surface negative?

• There is no charge enclosed.

• The surface is non-conductive.

• Electric field lines are leaving the surface.

• Electric field lines are entering the surface.

What does the net electric flux through a closed surface equal according to Gauss's law?

• Sum of all enclosed charges

• Average of all enclosed charges

• Minimum of all enclosed charges

• Maximum of all enclosed charges