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What is the SI unit of resistance?

in Electrical Engineering

What is the SI unit of resistance?

1 Answer

The SI unit of resistance is the ohm (symbol: Ω).

Resistance is a measure of how much a material opposes the flow of electric current. One ohm is defined as the resistance that allows one ampere of current to flow when a voltage of one volt is applied across a component.

So, if you have 1 volt of potential difference across a resistor and the current flowing through it is 1 ampere, the resistance of the resistor is 1 ohm.

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