Q:
# What Is the Equation for Voltage?

**The equation for voltage can be written as the current multiplied by the resistance.** Voltage is defined as the electric potential energy at a given point in an electric field or circuit, according to About.com.

Credit:
Jorge Franganillo
CC-BY-2.0

The SI unit for voltage is the volt or one joule per coulomb. Voltage is considered a scalar quantity, which means the measurement has no directional components, only magnitude. An alternate formula that can be used to calculate voltage is power divided by current. Voltage can also be defined as the electric potential energy per unit charge. The volt was named after the Italian physicist Alessandro Volta.

Learn more about Electricity-
Q:
## What Are the Three Formulas Associated With Ohm's Law?

A: The three formulas associated with Ohm’s law are the equations that demonstrate the relationships between voltage, current and resistance and follow from t... Full Answer >Filed Under: -
Q:
## For What Purposes Can You Use an Ohm's Law Calculator?

A: An Ohm's Law calculator is used to substitute values into an equation that compares voltage to resistance to determine electrical current. On a DC circuit,... Full Answer >Filed Under: -
Q:
## What Is the Difference Between an AC and DC Current?

A: Alternating current (AC) and direct current (DC) are types of voltage that are used for transmitting electricity. DC is constant energy that moves in one d... Full Answer >Filed Under: -
Q:
## What Is VAC Electricity?

A: VAC is an electrical voltage in an alternating current circuit. The power system supplying homes and businesses in the United States uses AC 120 V, while i... Full Answer >Filed Under: