The unit of electromotive force (emf) is

Answer: The unit of electromotive force (emf) is volt.

Volt is the Standard International (SI) unit of electric potential or electromotive force. It can be expressed as an average value over a given time interval, as an instantaneous value at a specific moment in time, or as an effective or root-mean-square (RMS) value. It is the amount of energy (E) provided by the battery to each coulomb of charge (Q) passing through.

EMF can be calculated by measuring the voltage across the cell using a voltmeter and the current in the circuit using an ammeter for various resistances. It is the electrical activity generated by a non-electrical source in electromagnetism and electronics. It is the most significant potential difference between the two electrodes when no current is taken from the cell. According to Faraday’s law, any change in the magnetic field of a coil will result in the induced EMF in the coil.

Summary:

What is the unit of electromotive force (emf)?

Volt is the unit of electromotive force (emf).