Which of the following is synonymous with voltage?

Voltage is synonymous with electrical potential. This term refers to the potential energy per unit charge available for moving charge within an electric field. It is essentially a measure of the possibility to perform work by moving a charge between two points in a circuit. Understanding this concept is fundamental in electrical engineering and physics because it helps describe how electrical energy is transferred and how circuits function.

Electrical potential is specifically measured in volts, which indicates the amount of work required to move a charge from one point to another. This concept is central to many applications, including how batteries work, how electrical devices operate, and how power systems are designed.

Other options such as electric charge, electromagnetic field, and electrical resistance are related concepts in electrical physics but do not represent the same idea as voltage. Electric charge refers to the property of matter that causes it to experience a force when placed in an electromagnetic field. The electromagnetic field describes the physical field produced by electrically charged objects, and electrical resistance is a measure of the opposition to current flow in a circuit. Each of these terms plays a crucial role in understanding electrical systems, yet they denote distinct characteristics that do not equate to voltage.