What is the unit of measurement for electromotive force?

The unit of measurement for electromotive force is the volt. Electromotive force (EMF) refers to the energy provided per charge by a source such as a battery or generator in an electric circuit. It is essentially the potential difference that drives the current through the circuit, indicating how much electrical energy is made available to move charged particles.

In terms of electrical units, a volt represents one joule of energy per coulomb of charge. Therefore, it directly measures the work done to move charge through an electrical circuit, which is fundamental in understanding how electrical systems operate.

The other units mentioned relate to different aspects of electrical measurements. Ohm measures resistance, ampere measures current, and watt measures power, which are all crucial concepts in electrical engineering but do not represent electromotive force.