The figure shows a charge q placed inside a cavity in an uncharged conductor. Now if an external electric field is switched on:

Only induced charge on outer surface will redistribute

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Only induced charge on inner surface will redistribute.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both induced charge on outer and inner surface will redistribute.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Force on charge q placed inside the cavity will change.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A
Only induced charge on outer surface will redistribute

External electric fields cannot penetrate a closed conductor because of electrostatic shielding. Hence they cannot affect any charges in the interior.

Suggest Corrections

Similar questions

Q. Assertion :Statement-1 When a point charge q is placed inside the cavity of a neutral conductor, equal and opposite charges are induced on inner and outer surfaces of the conductor. At a point P, electric field due to charges induced on cavity surface must be non-zero. Reason: Statement-2 Electric field at point P is zero.

Q. Figure shows a conductor with cavity inside it. Charge Q is kept inside cavity. a, b and c are 3 points as shown in figure. Choose the correct option(s).

Q. A metallic spherical shell has an inner radius

R_{1}

and outer radius

R_{2}

. A charge

Q

is placed at the centre of the spherical cavity. What will be surface charge density on (i) the inner surface, and (ii) the outer surface?

Q. A point charge

q_{1}

is placed inside cavity

1

and another point charge

q_{2}

is inside cavity

2

. If a point charge

q

is placed outside the conductor then the charge on outer surface of the conductor would be

A charge Q is placed at the centre of uncharged, hollow metallic sphere of radius a. (a) Find 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 surfaces ? (c) Find the electric field inside the sphere at a distance x form the centre in the situations (a) and (b).

Join BYJU'S Learning Program

The figure shows a charge q placed inside a cavity in an uncharged conductor. Now if an external electric field is switched on:

The correct option is A Only induced charge on outer surface will redistributeExternal electric fields cannot penetrate a closed conductor because of electrostatic shielding. Hence they cannot affect any charges in the interior.

The correct option is A
Only induced charge on outer surface will redistribute

External electric fields cannot penetrate a closed conductor because of electrostatic shielding. Hence they cannot affect any charges in the interior.