Let a total charge 2Q be distributed in a sphere of radius R, with the charge density given by , `rho(r)=kr`, where r is the distance from the centre. Two charge A and B, of –Q each, are placed on diametrically opposite points, at equal distance, a from the centre. If A and B do not experience any force, then:

A sphere of radius R has a charge density sigma . The electric intensity at a point at a distance r from its centre is

A solid sphere of radius R has total charge 2Q and volume charge density p=kr where r is distance from centre. Now charges Q and -Q are placed diametrically opposite at distance 2a where a is distance form centre of sphere such that net force on charge Q is zero then relation between a and R is

A solid sphere of radius R has total charge 2Q and volume charge density p=kr where r is distance from centre. Now charges Q and -Q are placed diametrically opposite at distance 2a where a is distance form centre of sphere such that net force on charge Q is zero then relation between a and R is

Charge density of a sphere of radius R is rho = rho_0/r where r is distance from centre of sphere.Total charge of sphere will be

Charge density of a sphere of radius R is rho = rho_0/r where r is distance from centre of sphere.Total charge of sphere will be

Charge is distributed within a sphere of radius R with a volume charge density p(r)=(A)/(r^(2))e^(-2r//a), where A and a are constants. If Q is the total charge of this charge distribution, the radius R is :

Charge is distributed within a sphere of radius R with a volume charge density p(r)=(A)/(r^(2))e^(-2r//a), where A and a are constants. If Q is the total charge of this charge distribution, the radius R is :

Charge Q is distributed on two concentric spheres of radius r and R resp. if charge density of both spheres is same then electric potential at centre will be

A solid sphere of radius R has total charge Q. The charge is distributed in spherically symmetric manner in the sphere. The charge density is zero at the centre and increases linearly with distance from the centre. (a) Find the charge density at distance r from the centre of the sphere. (b) Find the magnitude of electric field at a point ‘P’ inside the sphere at distance r_1 from the centre.