Electricity
What is mean by electromotive force (e.m.f.)?
Electromotive force (e.m.f.) is the electrical work done by a source in moving a unit charge around a complete circuit.
what is the unit of e.m.f. measured?
e.m.f. is measured in volts (V).
What does potential difference (p.d.) mean?
Potential difference (p.d.) is the work done by a unit charge passing through a component.