Hi, is there a term defined for the difference in relation

File: black.jpg (1KB, 300x168px) Image search: [Google]

1KB, 300x168px

Hi,

is there a term defined for the difference in relation between two expressions of the same proportionality? I've noticed this effect but haven't been able to find a word for it.

For example:
P = IV
where P is power, I is current, and V is voltage

and
V = IR
where R is resistance.

As the resistance increases, the current decreases proportionally, keeping the voltage constant. Assuming a constant voltage supply is present, you may alter the resistance and the current changes inversely, yet they are both multiplied in the formula.

On the contrary,
as the voltage increases in P = IV, the current does not decrease. It is well known that as the voltage increases, so does the current.

Thanks for your insight!