Particle in E and B Fields
This interactive simulator explores Particle in E and B Fields in Electricity & Magnetism. Lorentz force: cyclotron motion, E×B drift, trajectories in sim units. Use the controls to change the scenario; watch the visualization and any graphs or readouts to connect the model with lectures, labs, and homework.
Who it's for: Best once you already know the basic definitions and want to build intuition. Typical context: Electricity & Magnetism.
Key terms
- particle
- fields
- particle em field
- electricity
- magnetism
Live graphs
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
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