Question

what is si unit of resistance

Answer 1

Its si unit is OHM...................

Answer 2

Hello !

Resistance means opposition, hence , in physics , resistance of a substance means the ability of the substance to oppose the flow of current through it.
Different kind of substance have different resistances. The substances which offer low resistance( that allow the flow of current through them more easily) are conductors , and those which have high resistance are insulators or bad conductors.
=>SI Unit of resistance is ohm. (Ω - omega (greek letter))