Two concentric shells have radii R and 2R, charges q A and q B and potentials 2V and 
respectively. Now shell B is earthed by closing the switch S. After earthing of shell B charge on them become q A ' and q B ' -
A
= 
B
= 
C
Potential of A after earthing become 
D
Potential difference between A and farthing becomes 
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(a, d)
Before switching
After switching
Shell B become earthed and its potential become zero.
Charge on A remain conserved
Using (i) and (ii) we can find out V A .
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
Two equal negative charge – q are fixed at the fixed points and on the Y-axis. A positive charge …
An electric line of force in the xy plane is given by equation . A particle with unit positive cha…
A positively charged ball hangs from a silk thread. We put a positive test charge at a point and m…
If on the concentric hollow spheres of radii r and the charge is distributed such that their surf…
Two equal charges of opposite sign separated by a distance constitute an electric dipole of dipol…
A point charge q is placed at a distance a/2 directly above the center of a square of side a. The e…