electrical energy and efficiency

voltage, current and resistance, series and parallel,

recall the name given to large amounts of electrons

coulombs

The measure of potential energy that electrons have.

voltage (volt V) V

The flow of charge. A measure of the amount of charge that goes past a point in a second

current (amp A) I

the measure of how much a material opposes the flow of electric current

resistance (ohm Ω) R

find the V

V = I x R

find the I

I = V/R

find the R

R = V/I

What three features do ALL electric circuits have in common?

• a power source

• conductor

• a load (or device)

There are two main ways that electrical circuits can be connected. What are they?

• series

• parallel