As shown in the figure, a metallic rod of linear density 0.45 kg m^-1 is lying horizontally on a smooth inclined plane which makes an angle of 45^°…

As shown in the figure, a metallic rod of linear density $\displaystyle 0.45 \mathrm{~kg} \mathrm{~m}^{-1}$ is lying horizontally on a smooth inclined plane which makes an angle of $\displaystyle 45^{\circ}$ with the horizontal. The minimum current flowing in the rod required to keep it stationary, when $\displaystyle 0.15$ T magnetic field is acting on it in the vertical upward direction, will be : {Use $\displaystyle \mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2$ }