SOLUTION: The combined resistance of two resisitors R1 and R2, in a parallel circuit is given by the formula. Rr= 1/1/R1+1/R2 Simplify the formula. I'm totally lost on this question.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: The combined resistance of two resisitors R1 and R2, in a parallel circuit is given by the formula. Rr= 1/1/R1+1/R2 Simplify the formula. I'm totally lost on this question.       Log On


   

Question 115737This question is from textbook
: The combined resistance of two resisitors R1 and R2, in a parallel circuit is given by the formula.
Rr= 1/1/R1+1/R2
Simplify the formula. I'm totally lost on this question. Any assistance would be greatly appreciated. This question is from textbook

Answer by vertciel(183) About Me  (Show Source):
You can put this solution on YOUR website!
Hi there,
I am not exactly sure of your original formula. Would it be this: +1%2F%28%281%2FR1%29+%2B+%281%2FR2%29%29%29+ ? Make sure you get the formula right or everything will tumble!
+1%2F%28%281%2FR1%29+%2B+%281%2FR2%29%29%29+
= +1%2F%28%28R2+%2B+R1%29%2F%28R1R2%29%29+
= +R1R2%2F%28R2+%2B+R1%29+