A) \[-\frac{2{{q}^{2}}}{4\pi {{\varepsilon }_{0}}a}\]
B) \[\frac{2{{q}^{2}}{{\log }_{e}}2}{4\pi {{\varepsilon }_{0}}a}\]
C) \[-\frac{2{{q}^{2}}{{\log }_{e}}2}{4\pi {{\varepsilon }_{0}}a}\]
D) Zero
Correct Answer: C
Solution :
[c] \[U=2k{{q}^{2}}\left[ -\frac{1}{a}+\frac{1}{2a}-\frac{1}{3a}+\frac{1}{4a}+..... \right]\]You need to login to perform this action.
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