[单选题]
A conducting rod with a length of $0.20\,m$ is placed on two parallel conducting rails KL and MN as shown.
The uniform magnetic field (into the page) is normal to the plane of the conducting rails and has a magnitude of $5.0\,T$. A resistance of $1.5\,Ω$ is connected between the ends L and N of the rails. The copper rod moves at a constant speed of $3.0\,ms^{−1}$ in the direction shown. What is the magnitude and the direction of induced current passing through the resistor?
