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A solid sphere of radius R has a charge ...

A solid sphere of radius R has a charge `+2Q`. A hollow spherical concentric with the first sphere that has net charge -Q.

(a) Find the electric field between the spheres at a distance r from the centre of the inner sphere. `[R ltr lt3R]`
(b) Calculate the potential difference between the spheres.
(c) What would be the final distribution of charges, if a conducting wire joins the spheres?
(d) Instead of (c), if the inner sphere is earthed, what is the charge on it?

A

`(Q)/(2pi epsilon_(0)r^(2))`

B

`(Q)/(pi epsilon_(0)r^(2))`

C

`(Q)/(epsilon_(0)r^(2))`

D

`(Q)/(5pi epsilon_(0)r^(2))`

Text Solution

Verified by Experts

The correct Answer is:
A
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