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.
Correct Answer: C
Solution :
[c] Potential energy decreases whenever there is attraction. A negative charge placed at centroid causes attraction.You need to login to perform this action.
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