Question

I'm having trouble understanding the concepts relating emf and electric potential. Can anyone explain or know of a good resource?

Answer 1

@JFraser can you help?

Answer 2

emf is a special kind of electric potential

Answer 3

Potential difference of a electric cell or a battery is called emf

Answer 4

Actually potential nd potential difference r equivalent

Answer 5

Anyway, potential at any point within electric field of a charge is equal to work done on 1 unit charge come frm infinity to that point

Answer 6

U know potential at infinity is 0

Answer 7

So if potential at any point is 5volt. We can say potential difference is also 5-0=5volt

Answer 8

Feel free to ask for more clarification

Answer 9

Electric potential is that quantity which is required for the current to flow.. electric potential is never estimated at a single point.. it is always taken in between two points. now if the electric potential between to points is said to be 5 volts it means that there is a diffrence of 5 volt pot diffrence between those points. EMF is just the maximum value of potential diffrence.. like a voltage source can provide 10 V EMF.. it cant create more..
so potential diffrence appears at any two points across the circuit.. but EMF is the maximum pot a source can provide (across the source)

Answer 10

http://www.askmrtan.com/physics/17currentofelectricity/17currentofelectricity2.html