در حال بارگذاری...

خطا

$\begin{align}  & F=k\frac{{{q}^{2}}}{{{2}^{2}}}=\frac{1}{4}k{{q}^{2}} \\  & {F}'=2F\,\,\Rightarrow \,\,k\frac{\left| -\frac{1}{2}q \right|\times \frac{1}{4}q}{{{x}^{2}}}=2\times \frac{1}{4}k{{q}^{2}} \\  & \Rightarrow \,\,\frac{1}{8}\frac{k{{q}^{2}}}{{{x}^{2}}}=\frac{1}{2}k{{q}^{2}}\,\,\Rightarrow \,\,{{x}^{2}}=\frac{1}{4}\,\Rightarrow \,x=\frac{1}{2}m=50m \\ \end{align}$