electric circuits - Is there some other ways to deduce resistance from current, than Ohm's Law?

Is there some other ways to deduce resistance from current, than Ohm's Law?

Also, are Kirchoff's laws usually often in conjunction with Ohm's Law, because aren't

$$\sum I=0, \sum V=0$$

slightly useless for practical purposes on their own (without adding Ohm's Law to the above)?