MAGNETISM ELECTRICITY Magnetism The attraction of one magnet

MAGNETISM & ELECTRICITY

Magnetism • The attraction of one magnet to another

Magnetic Pole • The area around the magnet where the magnetic effect is strongest – Like poles repel • South , South • North , North – Unlike poles attract • South , North

Magnetic Field • The region of magnetic force around a magnet. – this allows magnets to interact without touching

Iron bearing metals • Materials that shows strong magnetic effects – Iron – Nickel – cobalt

What is Static Electricity ? • The build up of charge on an object • These charges do not flow • Rubbing certain materials together is a build up of static electricity. • Lightning is static electricity.

Benjamin Franklin • Discovered lightning was an electric current and built the first lightning rod.

Electric Current • Current: flow of electrons through a material

Circuits • A pathway taken by an electric current. – Closed circuits: allow the movement of electrical energy – Open circuits: stop the movement of electrical energy.

Circuits • Series Circuit: only one path for current to flow through • Parallel Circuit: more than one path for current to flow through

How does electricity move? • Conductors: allow electricity to move through them (metals) • Insulators: do not allow electricity to move through them (rubber, plastic, wood)

Electromagnet • Current flowing through a wired that’s been wrapped around an iron-bearing metal. This is a temporary magnet.

Michael Faraday Discovered that an electric motor could be made using electricity and magnetism.