Electromagnetism Resource

This chapter introduces some of the electromagnetic theory associated with electricity.

Some key points from this chapter:

• There are two types of charge: positive and negative. Both charges create electric fields.
• Static (non-moving) charges generate electric fields. These electric fields exert forces on charged particles.
• Electric field forces can be attractive or repulsive.
• Like charges repel, unlike charges attract.
• Magnetic fields are generated by moving charged particles.
• Magnetic fields are generated and can be held indefinitely by certain chemical elements such as iron, nickel and cobalt.