Two charges of -4 μ C and +4 μ C are placed at the points A(1, 0, 4)m and B(2, -1, 5)m located in an electric field E =0.20 i V / cm. The magnitude…

Two charges of $\displaystyle -4 \mu \mathrm{C}$ and $\displaystyle +4 \mu \mathrm{C}$ are placed at the points A($\displaystyle 1$, $\displaystyle 0$, $\displaystyle 4$)m and B($\displaystyle 2$, -$\displaystyle 1$, $\displaystyle 5$)m located in an electric field $\displaystyle \overrightarrow{\mathrm{E}}=0.20 \hat{i} \mathrm{~V} / \mathrm{cm}$. The magnitude of the torque acting on the dipole is $\displaystyle 8 \sqrt{\alpha} \times 10^{-5} \mathrm{Nm}$, where $\displaystyle \alpha=$ $\displaystyle \_\_\_\_$.