Thats pretty much how i learned them all as wellIt looks like there are a dozen formulas there. But in fact there are only two. Starting at the ?12 o?clock position,? and reading clockwise, the first formula is V = RxI. Continuing around the circle, the 10th formula is P = VxI. If you start with those two formulas, you can derive all the other versions. For example,
? Start with P = VxI
? In place of the V, substitute RxI (you can do that, because V = RxI).
? You get P = (RxI)xI
? That is the same as saying P = I*2xR. That happens to be the 11th formula in the circle (second one, if you counted from the top, and went counterclockwise).
All the formulas can be derived in a similar fashion. So in essence, you only need to remember two formulas.
Only that it saves a step in the math.What are the principles of equation formulation that apply to formulas that have square roots, and squared in the equation?
Right. Do the same thing with P (or W) over E x I with a second one. As said above, cover the unknown in either circle, and what's left is the math.
The horizontal line divides two variables, the vertical line multiplies them. Cover up the unknown, and either divide or multiply.
Zog, I was frankly taken back by the tone of by your response.
As a teacher congradulations on setting your students straight! Maybe your more diverse; maybe less singular of the aspects of the understanding and comprehension level that was presented to your students to retain when they first learned something in the first place. Maybe you stopped being a complete authority of what?s required in your study matter!
Your older students memorized the theory?s where no use was ever implied to understand or use it otherwise (also stated in the first article).
Amen. It is so much better to understand than memorize. Even so, I find it is not for everyone. The frustrating part is watching some take the easy path when you know they have the ability to learn more than they need to get by....I see this as a lack of teaching of the basic electrical principles in whatever courses were taken to become an electrician... I just believe understanding of these basic principles is important for anyone to be in any part of the electrical field. Just the way I am...
Does anybody have any tips or tricks to memorize the 12 formula power wheel, other than blatantly pounding it into my memory through repetition?