A) \[\frac{Q}{2\pi ({{b}^{2}}-{{a}^{2}})}\]
B) \[\frac{2Q}{\pi ({{a}^{2}}-{{b}^{2}})}\]
C) \[\frac{2Q}{\pi {{a}^{2}}}\]
D) \[\frac{Q}{2\pi {{a}^{2}}}\]
Correct Answer: D
Solution :
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