The relationship between Current (I), Voltage (V) and Resistance (R), is Ohms Law.
V=I x R
R=V/I
I= V/R
The ohm is defined in as a volt per ampere, from which we can say that resistance is the ratio of voltage to current. In other words,
R =
V/
I -but it is important to understand that in this equation,
R is the constant of proportionality -so the ratio of
V:I tells you what the resistance
happens to be. Neither voltage nor current affects resistance.