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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Self Evaluation Test - Electrostatic Potential and Capacitance

  • question_answer
    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.

    Correct Answer: C

    Solution :

    [c]   Potential energy decreases whenever there is attraction. A negative charge placed at centroid causes attraction.


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