In electronics, the symbol omega (Ω) represents ohms, which is the unit of measurement for electrical resistance. Ohm’s Law, which states that the current through a conductor between two points is directly proportional to the voltage across the two points, helps to understand this concept. The basic formula is V = I × R, where V is voltage, I is current, and R is resistance measured in ohms.
The term originates from the physicist Georg Simon Ohm, who first formulated the relationship between voltage, current, and resistance. When you see the omega symbol in circuit diagrams or specifications, it’s indicating the resistance of the component or circuit in question. In practical terms, a lower resistance (measured in ohms) means that current can flow more easily, while a higher resistance indicates that it is more difficult for current to pass through.