What is the standard unit symbol for voltage?

The standard unit symbol for voltage is "V," which stands for volts. Voltage can be understood as the electrical potential difference between two points in a circuit. It is a measure of how much energy is carried per unit charge, essentially determining how much work can be done by the electrical energy on the charges as they move between those two points.

Each of the other symbols represents a different electrical quantity: "A" stands for amperes, which measure electric current; "Ω" represents ohms, which measure resistance; and "Ωm" is ohm-meter, a unit used to measure resistivity. Understanding these distinctions helps clarify the role that voltage plays in electrical systems compared to current and resistance, which are also fundamental concepts in electrical science.