A) \[\frac{{{Q}_{1}}{{Q}_{2}}}{4\pi {{\varepsilon }_{0}}R}\]
B) \[\infty \]
C) \[\frac{{{Q}_{1}}{{Q}_{2}}}{4\pi {{\varepsilon }_{0}}{{R}^{2}}}\]
D) 0
Correct Answer: D
Solution :
(d) 0 Electrostatic force is a conservative force. So, work done in carrying an electric charge \[{{Q}_{1}}\] once round a circle of radius R with a charge \[{{Q}_{2}}\] at the centre of the circle is zero.
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