As shown in Figure, charge Q is kept in the inner cavity and a charge of 2Q and 3Q are imparted to the inner and outermost shells.
(a) Find charge at each of the surface .
(b) Find E in the first annular region and outside.

We have a fixed conductor having a cavity inside. There is a point charge q_(1) kept inside the cavity charge appearing at the inner surface of the cavity is q_(2) . Charge appearing at outer surface of conductor is q_(3) and there lies another point charge q_(4) out side the conductor. Whole situation is shown in figure. q_(4) . is held stationary by applying an external force vecF_(0) on it. Three points A, B and C are shown. Answer the following two questions. Q. If keeping the magnitude and nature of q_(1) fixed position of q_(1) is changed inside the cavity. Then choose the correct option(s)

Find charge on each spherical shell after joining the inner most shell outer most shell by a conducting wire. Also find charges on each surface.

We have a fixed conductor having a cavity inside. There is a point charge q_(1) kept inside the cavity charge appearing at the inner surface of the cavity is q_(2) . Charge appearing at outer surface of conductor is q_(3) and there lies another point charge q_(4) out side the conductor. Whole situation is shown in figure. q_(4) . is held stationary by applying an external force vecF_(0) on it. Three points A, B and C are shown. Answer the following two questions. Q. If keeping the nature and position of q_(1) fixed, magnitude of q_(1) is changed, then choose the INCORRECT options(s)

There are two concentric metal shells of radii r_(1) and r_(2) ( gt r_(1)) . If initially, the outer shell has a charge q and the inner shell is having zero charge and then inner shell is grounded. Find : (i) Charge on the inner surface of outer shell. (ii) Final charges on each sphere. (iii) Charge flown through wire in the ground.

A charge Q is placed at the centre of an uncharged, hollow metallic sphere of radius a. (a) Find the surface charge density on the inner surface and on the outer surface. (b) If a charge q is put on the sphere, what would be the surface charge densities on the inner and the outer surface? (c) Find the electric field inside the sphere at a distance x from the centre in the situations (a) and (b).

Two conducting closed surfaced shells are shown in figure. They are connected by wire through switch S. If q_(1) and q_(2) charges are given to inner and outer shells respectively . The switch is closed find the ratio of final charge to initial charge for each shell.

Three concentric conducting shells of radii a, b and c are shown in (Fig. 3.100). Charge on the shell of radius b is Q. If the key K is closed, find the charges on the innermost and outermost shells and the radio of charge densities of the shells. Given that a : b : c = 1 : 2 : 3 .

Four equal charges are kept fixed on the vertices of a square of side 'a'. A charge q_1 is kept at the centre of the square as shown in the figure . Then

Figure shows three metallic plates with charges Q, 4Q, and -Q, respectively. Determine the final charges on all the surfaces.

A point charge +q is placed at the centre of a conducting spherical shell of inner radius a and outer radius b. Find the charge appearing on the inner and outer surface of the shell.