A) \[\frac{(q+Q)}{4\pi {{\varepsilon }_{0}}}\frac{2}{R}\]
B) \[\frac{2Q}{4\pi {{\varepsilon }_{0}}R}\]
C) \[\frac{2Q}{4\pi {{\varepsilon }_{0}}R}-\frac{2q}{4\pi {{\varepsilon }_{0}}R}\]
D) \[\frac{2Q}{4\pi {{\varepsilon }_{0}}R}+\frac{q}{4\pi {{\varepsilon }_{0}}R}\]
Correct Answer: D
Solution :
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