# Electric Resistance

Written by Jerry Ratzlaff on . Posted in Electrical Engineering

Resistance $$(R)$$ is the ability to resist or prevent the flow of current. In order to overcome the resistance and get the current to flow a higher voltage will be required. Resistance is measured in Ohms, represented by $$R$$ and has a symbols $$\Omega$$.

Ohm is a unit of resistance. A constant current of one ampere produces a force of one volt.

## resistance formula

$$\large{ R = \frac{V}{I} }$$

$$\large{ R = \frac{V^2}{I} }$$

$$\large{ R = \frac{P}{I^2} }$$

Symbol English Metric
$$\large{ R }$$ = resistance $$\large{\Omega}$$ $$\large{\frac{kg-m^2}{s^3-A^2}}$$
$$\large{ I }$$ = current $$\large{I}$$ $$\large{\frac{C}{s}}$$
$$\large{ P }$$ = power $$\large{P}$$ $$\large{\frac{kg-m^2}{s^3}}$$
$$\large{ V }$$ = voltage $$\large{V}$$ $$\large{\frac{kg-m^2}{s^3-A}}$$

Tags: Electrical Equations