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.
( 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.
( I ) Current is what flows on a wire or conductor.
Current is measured in ( A ) amperes or amps.
( P ) Power is the amount of current times the voltage
level at a given point measured in wattage or watts.
( R ) Resistance determines how much current will flow through a component. Resistors are used to control voltage and current levels.
The higher the resistance, the smaller the amount of current is allowed to flow.
Resistance is measured in ohms.
E = I x R
I = E / R
P = E x I
R = E / I
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