Thursday, July 18, 2013

Electrical Conductivity

We just learned about what Capacitors are!

Let's learn about Electrical conductivity.

Electrical conductivity sounds like a couple of big words,
but really it's not all that hard to understand.

We know about electricity from things like lightning, batteries or plugs.

Conductivity just means how easy or hard it is for electricity to go through something.

Things like metals are very conductive, but things like rubber or plastic are not very conductive.
This is why plugs and wires for your electronics are all made out of metal,
and the metal wires are usually wrapped in rubber because then the electricity can't get out!

electrical wiring
(from: wikipedia - electrical wiring)

Things like rubber that are not very conductive, can also be called resistive.