Positively charged body A has been brought near a brass cylinder B mounted on a glass stand as shown

Question

Positively charged body A has been brought near a brass cylinder B mounted on a glass stand as shown in the figure. The potential of $B$ will be\ \

Professor PC Thomas Classes · Answer

Net charge on the cylinder $=+q+-q=0$\ $	herefore$ The potential of $B$ due to its own charge $=0$. But $B$ is situated in the + ve potential around $A$. Therefore $B$ will have a + ve potential. Note :- Around a +vely charged body there is a + ve potential. Around a - vely charged body there is a -ve potential. A body placed in a positive potential acquires that potential.\