Ohm's Law defines the relationships between
(P) power, (E) voltage, (I) current, and (R) resistance. One ohm is the
resistance value through which one volt will maintain a current of one ampere.
( I ) Current is what flows on a wire or conductor
like water flowing down a river.
Current flows from negative to positive on the surface of a conductor.
Current is measured in (A) amperes or amps.
( E ) Voltage is the difference in electrical potential
between two points in a circuit. It's the push or pressure behind current flow through a circuit,
and is measured in (V) volts.
( R ) Resistance determines how much current will
flow through a component.
used to control voltage and current levels. A very high resistance allows a small amount of current
to flow. A very low resistance allows a large amount of current to flow. Resistance is measured
( P ) Power is the amount of current times the voltage
level at a given point measured in wattage