9.5 Magnetic Forces on Moving Charges

Electromagnets

The relationship between electric current and magnetism is discussed as well as how to build an electromagnet. Duration: 4:22.

Magnetic Forces

The flow of charge generates a magnetic field, which can exert a force on an external magnetic field. Duration: 3:13.

 

Quick and Simple Motor

The secret to building a quick and simple motor. Duration: 1:05.