Two Particles with Charges Q and -Q Are Fixed at the Vertices

question 28

Multiple Choice

Two particles with charges Q and -Q are fixed at the vertices of an equilateral triangle with sides of length a.If k = 1/4 $\pi$ , the work required to move a particle with a charge q from the other vertex to the center of the line joining the fixed charges is:

• A)0
• B)kQq/a
• C)kQq/a²
• D)2kQq/a

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