An ohm is the measure of somethings resistance to current flow. Check out this page it will tell you all you want to know and probably more //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gifhttp://www.eatel.net/~amptech/elecdisc/
It's simply the unit of measure for electrical resistance, just as a pound or a kilogram is a unit of measurement for weight/mass.
It was established by a German physicist named George Simon Ohm.//content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif