Physics

Problem

Questions 73-74 ![](https://storage.googleapis.com/diraq-contents/question-bank/question-images/193f75e12507/2025_11_20_9d1bbfa4e2392a3466a4g-19.jpg) As shown in the figure above, six particles, each with charge

+Q

, are held fixed and ate equally spaced around the circumference of a circle of radius

R

. 74. With the six particles held fixed, how much work would be required to bring a seventh particle of charge

+Q

from very far away and place it at the center of the circle? (A) 0 (B)

\frac{\sqrt{6}}{4 \pi \varepsilon_{0}} \frac{Q}{R}

(C)

\frac{3}{2 \pi \varepsilon_{0}} \frac{Q^{2}}{R^{2}}

(D)

\frac{3}{2 \pi \varepsilon_{0}} \frac{Q^{2}}{R}

(E)

\frac{9}{\pi \varepsilon_{0}} \frac{Q^{2}}{R}

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