The component of electrical impedance that dissipates energy as heat, governed purely by the physical dimensions, material resistivity, and temperature of the conductor. It excludes frequency-dependent effects like inductive reactance, capacitive reactance, and the skin effect. It is the baseline resistance measured with a standard DC ohmmeter.
Heard on the job
We need to measure the ohmic resistance of the stator windings before we apply the high-voltage test.
Also heard as
- DC resistance
Do not mix it up with
- Impedance: Ohmic resistance is strictly the DC component, while impedance includes AC reactive components.
Related terms
Impedance
Total opposition a circuit offers to alternating current, combining resistance and reactance, in ohms.
Resistivity
The intrinsic property of a material that quantifies how strongly it opposes the flow of electric current.
Milliohmmeter
A specialized test instrument designed to measure very low electrical resistance.