The Greek letter omega is the symbol for this unit of electrical resistance
The letters in the Greek alphabet also have different symbols used 
to denote them, although the Greek alphabet does have capitals and ... Iota, , , 
Unit vector ... Omega, , , Electrical resistance (cap), solid angle, angular 
velocity... [DOC] [TLE] Ohm's Law [PAR] Ohm demonstrated that there are no "perfect" electrical conductors through a 
series ... to bring a unit of electric charge) of 1 volt applied between these two 
points, ... for electric resistance is R and the symbol for ohms is the Greek letter 
omega.