# Lorentz Force

The force on a charged particle moving in a magnetic field.

The direction of force is at a right angle to both the particle velocity (v) and the magnetic field (B).

The force can be expressed as the cross product of the velocity and magnetic field.

In a wire carrying current (I) in a magnetic field (B) which is perpendicular to the wire, there is a Lorentz force on the wire per unit wire length which is equal to the product of I and B and is at a right angle to both.

**Subjects: ** Electromagnetism