Q. There are two hollow spherical conductors A and B are given below. Points M and N can be connected by conductor wire.
Initially (before the connection of points M and N) conductor B is neutral, while charge appeared on conductor A is q. After connecting the spheres, the potential of sphere B isPhysics Question Image

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Solution:

After connection, the total charge on inner conductor transfers to outer one and in this situation potential of sphere B is given as Because both the spheres will attain an equal potential.