# Electric Resistance

Electric resistance R is a measure of how much an object or substance opposes the flow of electric current through it. 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 \(\Omega\). The resistance of an object depends on its size, shape, material, and temperature.

The resistance of a material can be calculated using Ohm's Law, which states that the current flowing through a conductor is directly proportional to the voltage across it, and inversely proportional to its resistance.

## Electric resistance formula |
||

\(\large{ R = \frac{V}{I} }\) | ||

Symbol |
English |
Metric |

\(\large{ R }\) = resistance | \(\large{\Omega}\) | \(\large{\frac{kg-m^2}{s^3-A^2}}\) |

\(\large{ V }\) = voltage | \(\large{V}\) | \(\large{\frac{kg-m^2}{s^3-A}}\) |

\(\large{ I }\) = current | \(\large{I}\) | \(\large{\frac{C}{s}}\) |

## Electric resistance formula |
||

\(\large{ R = \frac{V^2}{P} }\) | ||

Symbol |
English |
Metric |

\(\large{ R }\) = resistance | \(\large{\Omega}\) | \(\large{\frac{kg-m^2}{s^3-A^2}}\) |

\(\large{ V }\) = voltage | \(\large{V}\) | \(\large{\frac{kg-m^2}{s^3-A}}\) |

\(\large{ P }\) = power | \(\large{P}\) | \(\large{\frac{kg-m^2}{s^3}}\) |

## Electric resistance formula |
||

\(\large{ R = \frac{P}{I^2} }\) | ||

Symbol |
English |
Metric |

\(\large{ R }\) = resistance | \(\large{\Omega}\) | \(\large{\frac{kg-m^2}{s^3-A^2}}\) |

\(\large{ P }\) = power | \(\large{P}\) | \(\large{\frac{kg-m^2}{s^3}}\) |

\(\large{ I }\) = current | \(\large{I}\) | \(\large{\frac{C}{s}}\) |

Tags: Electrical