1/R= 1/r1(the1 here is a sub1) + 1/r2(the 2 here is a sub2) Solve for R?

3 ⤊

Formulas and applications.

2007-11-12 18:58:44 · 2 answers · asked by mark k. 1 in Science & Mathematics ➔ Mathematics

1 / R = 1 / r1 + 1 / r2
1 / R = (r2 + r1) / (r1 r2)
R = (r1 r2) / (r1 + r2)
(Formula for equivalent resistance of two resistors in parallel.)

2007-11-17 21:46:34 · answer #1 · answered by Como 7 · 2⤊ 1⤋

1/R = (r2+r1)./r1r2
R = r1r2/(r1+r2)

2007-11-13 03:04:21 · answer #2 · answered by Mein Hoon Na 7 · 1⤊ 1⤋