Question

what is the relationship between potential difference and current?

Answer 1

potential difference is voltage right?

Answer 2

Potential difference is directly proportionate to the current-so as one increases, so does the other.

Answer 3

@mishra230: That's very wrong, sry.. you can't "have voltage at one point" - as WasimahP mentioned correctly: voltage := potential difference! Voltage always exists between 2 points.

The relationship you are most likely looking for is called Ohm's law:\[R = {U \over I}\] R is the electrical resistance (measured in 'ohms'), U is the potential difference (measured in 'volts'), I is the electrical current (measured in 'amperes').

Answer 4

Potential Difference is the is the difference in electric potential energy per unit charge between two points between two poles.
EXAMPLE:-
If at one End the the difference in electric potential energy per unit charge between two points is 300V and at other End is 100V then the potential difference is 200V.

On the other hand, if the the difference in electric potential energy per unit charge between two points at one End is 900V and at other End the the difference in electric potential energy per unit charge between two points is 700V then also the potential difference is 200V.

Answer 5

@MuH4hA - Thank you very much for pointing out the mistake. I mistakenly used 'Voltage' word there. Now I have corrected that mistake and re-posted the correct answer.(THE WRONG ANSWER IS NO LONGER THERE-THE ONE ABOVE IS CORRECT )