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  • Brainly User
2014-09-24T15:57:54+05:30
POTENTIAL DIFFERENCE IS BETWEEN THE TWO ENDS OF A CURRENT CARRYING CONDUCTOR.
WHILE,EMF[The electromotive force ] is the maximum potential difference between two electrodes of a galvanic or voltaic cell.
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2014-09-30T19:44:47+05:30

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Emf is the electromotive force. It is the potential difference across the terminals (anode and cathode) of a battery. EMF is the potential maintained by a battery and is constant during the use of the battery. It is independent of current in the circuit. Potential difference across a battery is always in one direction from positive to negative terminal.  EMF is the source of current that drives electrons to travel in the circuit.

emf is also a potential difference.  but it is across DC batteries only.

Potential difference across any conductor is product of current passing through it and the resistance of the conductor. It is directly proportional to the current. If the current changes direction, then potential difference will become negative or will be positive in the other direction.  A potential difference is created due to the electrons traveling in a conductor.

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