Question

hola guys !! what is emf!​

Answer 1

Electromotive force, abbreviated emf, is the electrical intensity or "pressure" developed by a source of electrical energy such as a battery or generator. A device that converts other forms of energy into electrical energy provides an emf as its output.

Answer 2

In physics,

emf=The energy supplied by cell to circulate unit positive charge though circuit one round,this energy is called as emf of cell