Answers

  • Brainly User
2014-09-26T13:29:52+05:30
POTENTIAL DIFFERENCE REFER TO A DIFFERENCE BETWEEN TO ENDS OF A CURRENT CARRYING CONDUCTOR.
IT'S SI UNIT IS VOLT 
FORMULA TO FIND IS
PD =I × R 
EMF stands for Electromagnetic fields EMF'S, which are often called and invisible electrical and magnetic forces.
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THNX
emf means electromotive force
2014-09-26T22:57:00+05:30
potential difference between 2 points is the energy required to transport a unit  of positive charges between those two points. it is measured in volts.

the potential difference that makes electrons move in a certain direction within a conductor is called EMF or Electro Motive Force.
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