A spherical cavity of radius r is made in a conducting sphere of radius 2 r.A charge q is kept at the centre of cavity as shown in the figure.Find the magnitude of the total electric field at (4r 0) .

A spherical cavity of radius r is made in a conducting sphere of radius 2r. A charge 9 is kept at the centre of cavity as shown in the figure. Find the magnitude of the total electric field at(4r 0). у r (0 0) х 9 2r

A positively charge sphere of radius r_0 carries a volume charge density rho . A spherical cavity of radius r_0//2 is then scooped out and left empty. C_1 is the center of the sphere and C_2 that of the cavity. What is the direction and magnitude of the electric field at point B?

consider a neutral conducting sphere of radius a with a spherical cavity of radius b . A charged conducting sphere of radius c is placed in cavity . Centre of this sphere coincide with centre of cavity charge on the inner sphere is q total self energy of this arrangement is:

A hemispherical cavity of radius R is created in a solid sphere of radius 2R as shown in the figure . Then y -coordinate of the centre of mass of the remaining sphere is

A hemi-spherical cavity is created in solid sphere (of radius 2R ) as shown in the figure. Then

Consider a uniform charged sphere of charge density r and radius R.If the cavity of radius R/2is made inside the sphere and the removed part is again placed near the charge distribution as shown in the figure. If the electric field at the centre of the cavity is (rho R)/(n varepsilon_(0) find n .

A solid spherical conductor of radius R has a spherical cavity of radius at its centre. A charge is kept at the centre of the cavity. The charge at the inner surface, outer surface are respectively.