ECN Forum Forums General Topics of the Trade General Discussion Area ohm's law , low voltage also?

By reading some of the responses I thought I would chime in with a little more.

In school they have shown us 12 different formulas for finding whatever it is you want to find. There are several variations and now they are gradually going into inductance and capacitance. Doesn't really apply here though.

Anyway the basic that everyone has listed is:

E = I x R

I = E / R

R = E / I

then we have:

P = I x E

I = P / E

E = P / I

from these two formulas above they have shown us how to break these down to get 6 more formulas.

E² = R x P

R = E² / P

P = E² / R


and then we have:

P = I² x R

I² = P / R

R = P / I²


They all work if you give them a shot. I know it has helped is school by being able to go through the "backdoor" on some problems. Enjoy.

* edited because I can't spell this early in the morning*

[This message has been edited by GA76Apprentice (edited 12-12-2004).]