Electrostatics Question 349
Question: On rotating a point charge having a charge q around a charge Q in a circle of radius r. The work done will be [CPMT 1990, 97; MP PET 1993; AIIMS 1997; DCE 2003; KCET 2005]
Options:
A) $ q\times 2\pi r $
B) $ \frac{q\times 2\pi Q}{r} $
C) Zero
D) $ \frac{Q}{2{\varepsilon _{0}}r} $
Show Answer
Answer:
Correct Answer: C
Solution:
Since charge Q moving on equipotential surface so work done is zero.
