-To measure resistance an ohmmeter is used.
DC Resistance
The resistance of a given resistor or conductor grows with the length of conductor and specific resistivity of the material, and decreases for larger cross-sectional area.
AC Resistance
A wire carrying alternating current has a reduced effective cross sectional area because of the skin effect.
Thermal Resistance is a heat property - and a measure of a temperature difference, by which an object - or material resist a heat flow (heat per time unit or thermal resistance).
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