Electrical

Contact resistance

Türkçe: Kontak direnci

The extra resistance at the point where two conductive surfaces meet, caused by surface roughness and oxidation.

// EXPLANATION

In loose, dirty or partially seated connectors the contact resistance rises; I²R heating there creates a local hot spot. Heat raises the resistance further, and the process can feed itself all the way to a melted connector.

// ALSO KNOWN AS

contact resistance

// RELATED TERMS

Joule heatingThe conversion of electrical energy into heat, P = I²·R, as current flows through a conductor. 12VHPWRThe 16-pin (12+4) power connector that can carry up to 600 W to graphics cards; known for heating problems with poor seating and sharp bending. Electrical resistanceThe opposition a material offers to current flow; by Ohm's law R = V / I, measured in ohms.

// ARTICLES THAT MENTION THIS TERM

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