What is the unit equivalent to joules per coulomb (J/C)?

The unit joules per coulomb (J/C) is equivalent to a volt. This relationship stems from the definition of electric potential. Specifically, a volt is defined as the potential difference that will move one joule of energy per coulomb of charge. In simpler terms, when a charge of one coulomb moves through an electric potential difference of one volt, it gains one joule of energy.

Understanding this relationship emphasizes the role of voltage in electrical circuits and energy transfer. Voltage is an essential concept in the analysis of circuits, as it helps determine how much energy is available to do work when charges move within the circuit.

The other units listed in the choices represent different electrical properties: ohms measure resistance, amperes measure current, and farads measure capacitance. These units serve different purposes in electrical engineering and do not relate directly to the conversion of energy per charge as joules per coulomb does. Thus, the correct identification of joules per coulomb as volts is fundamental for grasping various electrical concepts and calculations.