Physics - Magnetism Question with Solution | TestHub

A charged particle with charge $\mathrm{q}$ enters a region of constant, uniform and mutually orthogonal fields $\vec{\mathrm{E}}$ and $\vec{\mathrm{B}}$ with a velocity $\vec{\mathrm{v}}$ perpendicular to both $\vec{\mathrm{E}}$ and $\vec{\mathrm{B}}$, and comes out without any change in magnitude or direction of $\vec{\mathrm{v}}$. Then