N concentric thin conducting shells having radius R , R/2 , R/22 , ...... is placed . N th shell is earthed . if Q charge is given to the outer shell , find the charge on the inner most shell .
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1 Answers
1Since inner most shell is earthed , therefore potential inside =0. Charge on outermost shell = Q. One charge there on inner most shell which we have to find out. since potential inside = 0. therefore kQ/R+Kq/r/2^n-1=0. q is what we have to find out..
On solving q is coming to be -Q/2^n-1.
