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Two identical conducting spheres A and B carry equal charge Q. They are separated by a distance much larger than their diameters. A third identical conducting sphere C carries charge 2Q. Sphere C is first touched to A, then to B, and finally removed. As a result, the electrostatic force between A and B, which was originally F, becomes

NETNUST Entry TestPhysicsElectrostatics

Unit of $\rm{CV^{2}}$ is equivalent to that of?

NETNUST Entry TestPhysicsElectrostatics

The Earth's potential and potential at infinity are taken:

NETNUST Entry TestPhysicsElectrostatics

Another name for electric potential energy per unit charge is given by:

NETNUST Entry TestPhysicsElectrostatics

Two opposite charges, each of magnitude $10^{-9} \mu C$ are seperated by a distance 9 m. The electric potential at a point mid way between them is

NETNUST Entry TestPhysicsElectrostatics

Tick the correct statement:

NETNUST Entry TestPhysicsElectrostatics

The surface density of charge is defined as:

NETNUST Entry TestPhysicsElectrostatics

Gaussian surface is always:

NETNUST Entry TestPhysicsElectrostatics

A field-free region is found:

NETNUST Entry TestPhysicsElectrostatics

While finding the electric intensity at a point between two oppositely charged parallel plates, the Gaussian surface is taken in the form of a hollow:

NETNUST Entry TestPhysicsElectrostatics

The interior of a hollow charged metal sphere is a region which:

NETNUST Entry TestPhysicsElectrostatics

The flux through any closed surface is $\frac{1}{\epsilon_{\circ}}$ times the total charge enclosed in it. This statement is called:

NETNUST Entry TestPhysicsElectrostatics

Total flux through a closed surface depends upon:

NETNUST Entry TestPhysicsElectrostatics

Flux through a closed surface of any shape and flux through the surface of a sphere drawn around a charge are:

NETNUST Entry TestPhysicsElectrostatics

Total spherical surface area is given by the formula:

NETNUST Entry TestPhysicsElectrostatics

Certain charge +q is placed at the centre of a sphere. At each patch of the sphere, the directions of electric intensity and vector area are:

NETNUST Entry TestPhysicsElectrostatics

The electric flux through any surface depends upon:

NETNUST Entry TestPhysicsElectrostatics

When certain area A is held parallel to the field lines, then:

NETNUST Entry TestPhysicsElectrostatics

The SI unit of electric flux is:

NETNUST Entry TestPhysicsElectrostatics

The number of field lines passing through unit area held perpendicular to the field line represent:

NETNUST Entry TestPhysicsElectrostatics

The number of field lines passing through a certain element of area is known as:

NETNUST Entry TestPhysicsElectrostatics

Electric flux is:

NETNUST Entry TestPhysicsElectrostatics

An inkjet printer uses in its operation:

NETNUST Entry TestPhysicsElectrostatics

An important part of an inkjet printer is:

NETNUST Entry TestPhysicsElectrostatics

The inkjet printer ejects a thin stream of:

NETNUST Entry TestPhysicsElectrostatics