Re: Basic theory/formula's
I find that an Ohm's law equation can always be solved by remembering one rule:
I x R = E can be changed to
E / R = I or
E / I = R
It might be clearer to use numbers:
2 X 3 = 6 can be changed to
6 / 3 = 2 or
6 / 2 = 3
Given any two variables the third can always be deduced. I also think of this as being able to "unmultiply" something by dividing it in the opposite direction.
100w / 120v = .833333A and you need resistance
that's E / I = R or 120v / .833333A = 144ohms
[ May 09, 2003, 03:54 PM: Message edited by: physis ]