What symbol is commonly used to represent resistance in electrical equations?

The symbol commonly used to represent resistance in electrical equations is Omega (Ω). This notation comes from the field of electrical engineering and physics, specifically defined in Ohm's Law, which describes the relationship between voltage (V), current (I), and resistance (R) in a circuit. The formula is expressed as V = I × R, where R is the resistance measured in ohms (Ω). The use of Omega as the unit symbol for resistance emphasizes its origin from the Greek alphabet, which has been adopted universally in scientific and engineering contexts. This helps standardize communication regarding electrical components across various disciplines and cultures. The recognition of Omega in this role is a fundamental aspect of studying electronic circuits and understanding their behavior.