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

question 13

Multiple Choice

Two particle with charges Q and -Q are fixed at the vertices of an equilateral triangle with sides of length a. If k = 1/4 $\pi$$\varepsilon$ ₀, 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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