A solid metal cube of edge length 2 cm is moving in a positive y -direction at a constant speed of 6 m / s. There is a uniform magnetic field of 0.1…

A solid metal cube of edge length $\displaystyle 2$ cm is moving in a positive $\displaystyle y$-direction at a constant speed of $\displaystyle 6 \mathrm{~m} / \mathrm{s}$. There is a uniform magnetic field of $\displaystyle 0.1$ T in the positive $\displaystyle z$-direction. The potential difference between the two faces of the cube perpendicular to the $\displaystyle x$-axis, is :