Particle in E and B Fields

How it works

A non-relativistic point charge in uniform electric and magnetic fields obeys the Lorentz force law F = q(E + v × B). In the plane perpendicular to B, this produces cyclotron motion when E vanishes, parabolic bending when B vanishes, and steady E×B drift when both are present. This simulation uses a consistent reduced unit system with scaled time so trajectories are easy to see; compare the measured |v|(t) to expectations for pure magnetic deflection (speed constant).

Key equations