Question

Two concentric metallic spheres A and B with A having uniform positive charge distribution and B being uncharged ,then whole charge of A can be transformed to B a) If B is grounded b) If A is grounded c) If A and B are joined by a conductor d) If the medium between A and B is filled with a dielectric​

Answer 1

Answer:

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A and B are two concentric spheres If A is given a charge Q while B is earthed as shown in figure :

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Correct option is

C

The field between A and B is not zero

Given A and B are two concentric spheres. If A is given charge Q while B is earthed, then this arrangement is equivalent to a spherical capacitor. The electric field within the sphere A is zero. Electric field outside the sphere B is also zero.

The electric field between the spheres A and B is non-zero and is given by:

E=

4πε

0

1

r

2

Q

; i.e, r is the distance from the center and is redirected radially outwards