To what potential we must charge an insulate sphere of radius 14 cm, so that the surface charge density is equal to `2 muC m^(-2)` ?

To what potential, must we charge an insulated sphere of radius 14 cm so that its surface charge density of 1 muC m^(-2) ?

To what potential must a insulated sphere of radius 10 cm be charged so that the surface density of charge is equal of 1 muC//m^ 2 .

What charge would be required to electrify a sphere of radius 15 cm so as to get a surface charge density of (7)/(11) mu Cm^(-2) ?

What charge would be required to electrify a sphere of radius 25 cm, so as to get a surface charge density of (3)/(pi)Cm^(-2) ?

Two charged spheres of radii R_(1) and R_(2) having equal surface charge density. The ratio of their potential is

Two metal spheres, one fo radius R and the other of radius 2R, both have same surface charge density s. They are brought in contact and seprated. What will be new surface charge densitites on them ?

Two isolated metallic solid spheres of radii R and 2R are charged such that both of these have same charge density 12 muC//m^(2) . The spheres are located far away from each other, and connected by a thin conducting wire. Find the new charge density on the bigger sphere in muC//m^(2) .

What should be the charge on a sphere of radius 4 cm, so that when it is brought in contact with another sphere of radius 2 cm carrying charge of 10 mu C , there is no transfer of charge from one sphere to other ?

An insulated charged conducting sphere of radius 5cm has a potential of 10V at the surface. What is the potential at centre?