E.M.F
Electromotive force:- the emf of a source is defined as the work done by the source in taking a unit positive charge from its lower potential terminal to the higher potential terminal.
Or
It is the energy supplied by the source n taking a unit positive charge once round the complete circuit.
SI unit of emf is volt, it an electrochemical cell supplies energy of 1 joule for the flow of 1 coulomb of charge through the whole ckt, then its emf is said to be 1.
Difference between electromotive force and potential difference:
Electromotive force |
Potential difference |
|
|
|
|
|
|
|
|
Related Keywords