Electrical resistance by Joule's law (given electric power and voltage)

Formula

Electrical resistance by Joule's law (given electric power and voltage) formula
R
electrical resistance
V
voltage, electrical potential difference or electric tension
P
electric power

Formula description

Joule's first law states that the rate of heat dissipation in a resistive conductor is proportional to the square of the current through it and to its resistance. Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points, and inversely proportional to the resistance between them.

Calculator (how to use calculator?)

Electrical resistance by Joule's law (given electric power and voltage) formula
V
P
R
Precision

Formula code








References

  1. wikipedia: Resistance.
  2. wikipedia: Joule's law.

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