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what is ohms law

Ohm's Law deals with the relationship between voltage and current in an ideal conductor. This relationship states that:

The potential difference (voltage) across an ideal conductor is proportional to the current through it.

The constant of proportionality is called the "resistance", R.

Ohm's Law is given by:

V = I R

where V is the potential difference between two points which include a resistance R. I is the current flowing through the resistance.

For biological work, it is often preferable to use the conductance, g = 1/R;

In this form Ohm's Law is: I = g V