The Lorentz Force: The Sideways Push Behind Every Electric Motor

A current in a magnetic field feels a force at right angles to both. That one rule is the whole reason motors turn, speakers move, and a particle beam curves. This video shows the right-hand rule in three dimensions and then applies it.

You'll see the force on a single wire, on a loop, and the torque that makes a motor spin.

In this video

• The force on a moving charge and on a wire
• The right-hand rule, shown in 3D
• Torque on a current loop
• Motors, speakers and beam steering