Figure shows a system of three positive charges placed at the vertical – McqOptions

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1.	Figure shows a system of three positive charges placed at the verticals of and equilateral triangle. To decrease the potential energy of the system,
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.
Answer» D. it should be rotated by an angle of \[\frac{\pi }{2}\] radian.

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