A) \[{{r}^{-1}}\]
B) r
C) \[{{r}^{2}}\]
D) \[{{r}^{-2}}\]
Correct Answer: A
Solution :
\[{{r}^{-1}}\] We know that, electric field at distance r from an infinitely long line charge is given by \[E=\frac{\lambda }{2\pi {{\varepsilon }_{0}}r}\Rightarrow \lambda =2\pi {{\varepsilon }_{0}}\,.\,rE\] \[E\propto {{r}^{-1}}\]You need to login to perform this action.
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