Gauss' Law and Appications

Gauss Law and Application  l Bsc Third Semester Physics Most Important Question and Answer

Electromagnetic theory and Modern Optics 

Short Answer type Question and Answer 

Q.1: Explain the principle of superposition.

Ans.: When a number of charge are present, the total force on a given charge is equal to the vector sum of the forces but to the remaining other charges on the given charge.

Q.2: What is equipotential surface?

Ans.: A surface which has same potential at all      points.

Q.3: What is dipole moment of a current?

Ans.: nIA

Q.4: What is the torque on a dipole of dipole 

moment P in an electric field E ?

Ans.: P x E

Q.5: What is the angle between the equipotential

surface and electric lines of force?

Ans.: 0°

Q.6: State of Gauss' Law in electrostatics.

Ans.:          Gauss' Law :-

This law gives a relation between the electric flux through any closed hypothetical surface (called a Gaussian surface) and the charge enclosed by the surface. It states that the electric flux ΦE through any closed surface is equal to 1/ε0 times the 'net' charge q enclosed by the surface.

        

This is the integral form of Gauss' law.