What unit is used to measure voltage?

The unit used to measure voltage is the volt. Voltage, also known as electric potential difference, refers to the amount of electric potential energy per unit charge between two points in an electric field. One volt is defined as the potential difference that would move one ampere of current against one ohm of resistance. This fundamental relationship forms the basis for many electrical concepts and is crucial for understanding how circuits operate.

Other units mentioned, such as ohms, watts, and joules, measure different quantities in the electrical framework. Ohms measure resistance, watts measure power (the rate at which energy is used or produced), and joules measure energy itself. Each of these has its own specific role in electrical calculations, but when discussing voltage, it is specifically measured in volts.