The length of a straight thin wire is 2 m. It is uniformly charged with a positive charge of `3 mu C` .Calculate :
The charge density of the wire .

The length of a straight thin wire is 2 m. It is uniformly charged with a positive charge of 3 C. If charge density of the wire is 1.5 x 10-6 C/m then calculate the electric intensity due to the wire at a point 1.5 m away from the centre of the wire.

A charge of magnitude 2muC is distributed uniformly throughout the soild metal sphere of radius 1 cm, them volume charge density of sphere is

A sphere of radius1 0 cm carries a charge of 1 mu C . Calculate the electric field at the surface of the sphere

10 muC charge is uniformly distributed along a wire of length 5m. Its linear charge density is

Sonometer wire is kept under tension of 2kg wt . If resonating length of the wire is 18 cm in fundamental mode of vibration , find the frequency of vibration of the wire. (Linear density of the wire = 0.008 gram /cm, g = 9.8 m/s^2 )

The electric field at a point due to a point charge is 60 N//C and the electric potential at that point is 30 J//C . Calculate the distance of the point from the charge and the magnitude of the charge.

A composite wire is prepared by joining a tungsten wire and steel wire Both the wires are of the same length and same area of cross section. If this composite wire is suspended to a rigid support and a force is applied to its free end, it gets extended by 3.25 mm. Calculate the increase in length of tungsten wire and steel wire separately.

What is the potential energy of the equal positive point charges of 1muC each, held 2m apart in air-