Electrostatics Question 789
Question: A system of three positive charges placed at the verticals of and equilateral triangle. To decrease the potential energy of the system,
Options:
A) a positive charge should be placed at centroid.
B) a negative charge should be placed at centroid.
C) distance between the charges should be decreased.
D) it should be rotated by an angle of $ \frac{\pi }{2} $ radian.
Show Answer
Answer:
Correct Answer: C
Solution:
[c] Potential energy decreases whenever there is attraction. A negative charge placed at centroid causes attraction.
