Four Charged Particles (Two Having a Charge +Q and Two

question 140

Multiple Choice

Four charged particles (two having a charge +Q and two having a charge -Q) are arranged in the xy-plane as shown in the figure. The charges are all equidistant from the origin. The amount of work required to move a positively charged particle from point P to point O (both of which are on the z-axis) is

• A) zero.
• B) positive.
• C) negative.
• D) depends on the path in which the charged is moved.

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