Electrostatics Question 667
Question: A small conducting sphere of radius$ a $ , carrying a charge$ +Q $ , is placed inside an equal and oppositely charged conducting shell of radius b such that their centers coincide. Determine the potential at a point which is at a distance c from center such that a < c < b.
Options:
A) $ k(Q/c+Q/b) $
B) $ k(Q/a+Q/b) $
C) $ k(Q/a-Q/b) $
D) $ k(Q/c-Q/b) $
Show Answer
Answer:
Correct Answer: D
Solution:
[d] $ V=\frac{kQ}{c}-\frac{kQ}{b}=k( \frac{Q}{c}-\frac{Q}{b} ) $
