A long charged cylinder of linear charged density `lambda` is surrounded by a hollow co-axial conducting cylinder. What is the electric field in the space between the two cylinders?

Two charged conducting spheres of radii a and b are connected to each other by a wire. What is the ratio of electric fields at the surfaces of the two spheres? Use the result obtained to explain why charge density on the sharp and pointed ends of a conductor is higher than on its flatten portions.

Consider an infinitely long straight uniformly charged wire with linear charge density ? Br Apply Gauss.s theorem to find the electric field at P for the above mentioned charged wire. Write the direction of the field.

If the dielectric slab is absent and the capacitor is charged to a surface charge density o, the electric field in between the plates is

Two point charge q_A=3muC and q_b=-3muC are located 20 cm apart in vacuum.What is the electric field at the midpoint 0 of the line AB joining the two charge ?

A uniformly charged conducting spheres of 2.4m diameter has a surface charge density of 80.0mu Cm^-2 ?.What is the total electric flux leaving the surface of the sphere?