Circuits, Batteries and Bulbs

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Electricity

The flow of tiny particles called electrons

Electrical Circuit

Electrons flowing in a closed path flow in this

Alternating Current

A periodic conduction current that reverses its direction at regular intervals

Direct Current

An electrical current flowing in one direction only

Electric Pole

One of two terminals of an electric cell, battery or generator; one is designated positive and the other negative

Watt

A unit of power or work of one ampere of electric current under pressure of one volt

Volt

A unit of electromotive force which, when applied to a conductor whose resistance is one ohm will produce a current of one ampere

Insulator

materials that don't let electricity go through them

Conductor

materials that let electricity go through them

Series Circuit

A series circuit allows electrons to follow only one path. The loads in a series circuit must share the available voltage. In other words, each load in a series circuit will use up some portion of the voltage, leaving less for the next load in the circuit. This means that the light, heat, or sound given off by the device will be reduced.

Parallel Circuit

the electric current can follow more than one path to return to the source, so it splits up among all the available paths.

Metal

metals are good conductors

part of atoms

Circuit

this word means "go around"

Why don't you get electricuted in a bumper car?

Because you don't touch the source of the electricity at the top of the rod

Cold

There is enough electricity coming out of the wall to do what to you?

stop your heart and burn you

How does an electric train run?

There is a circuit inside the train track

batteries

Electrons jump from what to what?

one atom to another

Resistor

Something that lets only some of the electrons pass through

Voltage

In an electrical circuit the pressure is referred to as this

Amp

In an electrical circuit the number of electrons is referred to as this

Electrical Power

voltage plus amps

Electrons are pushed by what two things?

Chemical Reactions and generators

Electrtrodes

The goopy chemicals inside a battery

up to 800

Water

AC stands for

Alternating current

Direct current

Photovoltaic cell

a cell that turns light into electricity

Why are there two prongs on every plug?

Because electricity has to travel in a circuit

Example:

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