 ## Ohm’s Law w/ Calculator

 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

Power (Wattage)   Voltage

Voltage Volts
Amperage Amps
Wattage Watts

Amperage Amps
Resistance Ohms
Voltage Volts

Amperage   Resistance

Voltage Volts
Resistance Ohms
Amperage Amps

Voltage Volts
Amperage Amps
Resistance Ohms

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