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The SI derived unit of electric resistance is the ohm, which is defined as a volt per ampere.
The S.I. unit of electrical resistance is the ohm (Ω). The resistance (R) of an object is defined as the ratio of voltage across it (V) to current through it (I). That is, R=IV ohms.
The SI unit of electrical resistance is ohm.
V = IR
1 ohm is equal to 1 volt per ampere.