| − | The '''[[ohm]]''' (symbol Ω<ref>That's the Greek letter omega. Never let it be said that physicists don't have a sense of humor.</ref>, for [[Georg Simon Ohm]]) is that amount of [[electric resistance]] that requires an electric potential difference of one volt to push a current of one ampere through it. To calculate, divide electrical potential by current. | + | The '''ohm''' (symbol Ω<ref>That's the Greek letter omega. Never let it be said that physicists don't have a sense of humor.</ref>, for [[Georg Simon Ohm]]) is that amount of [[electric resistance]] that requires an electric potential difference of one volt to push a current of one ampere through it. To calculate, divide electrical potential by current. |