A 1 m long metal rod X Y completes the circuit as shown in figure. The plane of the circuit is perpendicular to the magnetic field of flux density…

A $\displaystyle 1$ m long metal rod $\displaystyle X Y$ completes the circuit as shown in figure. The plane of the circuit is perpendicular to the magnetic field of flux density $\displaystyle 0.15$ T. If the resistance of the circuit is $\displaystyle 5 \Omega$, the force needed to move the rod in direction, as indicated, with a constant speed of $\displaystyle 4 \mathrm{~m} / \mathrm{s}$ will be $\displaystyle \_\_\_\_$ $\displaystyle 10^{-3} N$.