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# Electrical Resistance Calculator

Last updated: Monday, May 01, 2023
Select a formula below
Ohm's Law
Power & Current
Potential & Power

Electric resistance can be determined by using the relationship between electrical power and electrical potential. The formula for this relationship is: electric power = (electrical potential)^2 / electrical resistance. By rearranging this formula, we can solve for electrical resistance as: electrical resistance = (electrical potential)^2 / electric power. This means that if we know the electrical power and electrical potential of a circuit, we can calculate the electrical resistance. This is a useful calculation in designing and analyzing electrical circuits.

An alternative formula for determining the resistance can be derived from:
$$P$$ $$=$$ $$\dfrac{V^2}{R}$$
$$R$$: the resistance
$$V$$: the electric potential
$$P$$: the electric power
The SI unit of electric resistance is: $$ohm\text{ }(\Omega)$$

## Find R

Use this calculator to determine the resistance when the electric potential and the electric power are given.
the electric potential
$$V$$
$$volt$$
the electric power
$$P$$
$$watt$$
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