Question

The normal electric flux per unit area is called
A. Electric field intensity
B. Electric force
C. Electric flux density
D. Electric potential

Answer 1

Hint: The electric field intensity is force per unit charge. The electric flux density is an electric charge over a unit area. The electric flux is the product of the electric field and the surface area. Using these definitions, we will answer the question.

Complete answer:
From the given information, we have the data as follows.
The product of the electric field and the surface area which is perpendicular to the field is called the electric flux. The force experienced per unit positive charge at a point in the electric field is called the electric field intensity. The attractive or the repulsive interaction between the charged bodies is called the electric force. The charge per unit area is called the electric flux density. Or, the amount of flux passing through the defined area perpendicular to the direction of flux. The amount of work needed to move a unit charge from one point to the other against an electric field is called the electric potential.
The electric field intensity is force per unit charge. The electric flux density is an electric charge over a unit area. Thus, the electric field intensity is the same as that of the electric flux density.
\[\therefore \] The normal electric flux per unit area is called the electric field intensity and the electric flux density.

Thus, options (A) and (C) are correct.

Note:
The strength of the electric field is measured using a quantity called the electric field intensity. The greater the electric field intensity, the stronger will be the electric field. The electric potential is the measure of the difference between the potentials at different points in an electric field.