Electrostatics

Please give the Expression of E , U , V , B at
1)a point inside and outside a solenoid
2) a point inside and ouside a cylinder
3)a point on axial and equatorial pt of dipole
4) at centre and axial pt of a ring
5) a point inside and ouside a sphere
6) a point inside and ouside a hollow sphere
7) a point at centre and axial point a disc
Condider the objects to be charged for E, U, V
and current carrying for B .Just give expression no derivation
