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## Main Question or Discussion Point

So I'm making a simulation to help me understand electromagnetics.

Basically I have a stationary bar magnet, along with a moving electron.

Each frame the electron has a force applied to it via the Lorentz force law, F = q(E+v cross B).

Now E = 0, but how do I calculate B?

The Biot-Savart law relates to currents, but a bar magnet doesn't have any current.

Cheers

Basically I have a stationary bar magnet, along with a moving electron.

Each frame the electron has a force applied to it via the Lorentz force law, F = q(E+v cross B).

Now E = 0, but how do I calculate B?

The Biot-Savart law relates to currents, but a bar magnet doesn't have any current.

Cheers