Circuits Key Points Circuits consist of an energy

Circuits

Key Points • Circuits consist of an energy source, a load, wires, and, in some cases, a switch. • All parts of a series circuit are connected in a single loop. The loads in a parallel circuit are on separate branches. • Circuits fail through a short circuit or an overload. Fuses or circuit breakers protect against circuit failure. • It is important to follow safety tips when using electrical energy.

Circuits consist of an energy source, a load, wires, and, in some cases, a switch.

A closed circuit is ON! ON

An open circuit is OFF! OFF

All parts of a series circuit are connected in a single loop. ent r r u c re the get a h s y The d so n a y l l equa every time ! er dimm ulb is added er b h t o n a

With two bulbs sharing in a series, the light is dim. With three bulbs sharing, it’s even dimmer.

The loads in a parallel circuit are on separate branches. hs, t a p e l multip – they e k a t y can hare t i s c i o r t t c d The ele lbs don’t nee right. yb bu so the are all equall

Equal in brightness with 1, 2, or even 3 bulbs.

Something to think about… • Do you think your house is wired on a series or a parallel circuit? ?

If you said, “parallel” you are correct! If your house were wired on a series circuit, all your lights would be either on or off at the same time…how well would that work? ?