Electric Charge...

 A uniform electric field exists in the region as shown. The total electric flux through the cube of side $$l$$, is

Charge $$q$$ is kept at centre of cylindrical body, flux of circle square of body is $$\phi_{0}$$ then flux of curve surface of body is 

A charge $$q$$ is placed inside a cube of side $$a$$ as shown in the figure. $$O$$ is the centre of the face $$ABCD$$ and $$q$$ is just above the point $$O$$ at a distance $$\cfrac{a}{4}$$. The electric flux passing through $$ABCD$$ is

If $$E_{a}$$ be the electric field strength of a short dipole at a point on its axial line and $$E_{e}$$ that on the equatorial line at the same distance, then

There are two charges $$ +1$$ $$\mu$$ and $$+5$$  $$\mu$$ .The ratio of the forces acting on them will be 

Equal charges of each $$2\mu C$$ are passes $$x=0, 2, 4$$ and 8 $$cm$$ on the x-axis. The force experienced by the charge at $$x=2 cm$$ is equal to

At some point in space the electric field is $$5\ NC^{-1}$$. The electric lines of force crossing a unit area placed at right angles to electric field at this point is:-

If two identical spheres having charge 16 $$\mu C$$  and -8 $$\mu C$$ are kept at certain distance apart, then the force is F. They are touched and again kept at the same distance, the force 

In an atom, two electrons move around the nucleus in circular orbits of radii $$R$$ and $$4R$$. The ratio of the  time taken by them to complete one revolution is : ( neglect electric interaction )

What is the distance between two electrons if one exerts a force upon other equal to its weight