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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