Electricity

Positive electric charge

Negative electric charge

No electrical charge

number of protons = number of electrons (neither attract nor repel)

an unbalanced negative or positive electric charge on an object

A force between charged objects which can still happen even when they are not touching

Electric force and electric charge are directly related and electric force and distance are inversely related

A material in which electric charges cannot easily move (higher the resistance the better it is)

A material in which electric charges can easily move (lower the resistance the better it is)

the transfer of electric charge by a simple touch when electric charges flow from one conductor to another

the transfer of electric charge by scrambling electrons in conducting materials. A charged object scrambles the electrons in two conducting materials it is brought near by repelling the electrons in the conductors so that more electrons are on the far object. When the conductors are separated, the charges are trapped and can't return to where they were before

charge by rubbing. One object scrapes electrons off of another object, and both become charged in the process.

when electrons concentrate at one end of an object

the process of an unbalanced electric charge becoming balanced (lightning is a large electric discharge of static electricity

providing a path for electric charges to flow safely into the ground

The movement of electrically charged particles (electrons)

A closed, complete path in which an electric current can travel

How scientists count the number of electrons (electric charge)

SI unit of electric current

1 coulomb of charge flows the wire per second

a measure of how difficult it is for electrons to flow through a material

A unit of electric resistance

the relationship among current, voltage and resistance in a circuit

V=I•R, R=V÷I, I=V÷R (V=voltage, I=current, R=resistance)

directly related

inversely related

the amount of energy the source uses to move electrons through an electric circuit

1. Source of electric energy

2. Electrical devices that transform electrical energy

3. Conductors such as wires that connect everything

convert electrical energy to other forms of energy

A circuit that has only one path for the electric current to follow.

An electric circuit with two or more paths through which energy can flow

A piece of metal that melts to break the circuit when there is too much thermal energy

a switch that opens the circuit if the current is too high

Senses if not all of the current is flowing and opens the circuit

Any complete circuit with no resistance (it's connected to a battery, but not to any light sources or appliances)

occurs when electric current flows through your body (0.01 A causes a shock but 0.1 A can kill you)