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






Please Note:  We make every effort to provide accurate and correct technical support for the products we sell. This information and support is provided "AS-IS" without warranties of any kind, and is subject to change without notice. Our trained product support staff has collected this information from various sources and provides it to you for informational purposes only. We do not warrant or make any representations regarding how you choose to use this information.

Newsletter SignUp