1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Resistors, parallel line notation?

  1. Dec 14, 2011 #1
    I was looking at an answer regarding resistors, and saw the notation;

    R = R1 + R//
    where
    1/R// = 1/R2 + 1/R3

    I was wondering what the two parallel lines after the R indicate?

    Thanks.
     
  2. jcsd
  3. Dec 14, 2011 #2

    gneill

    User Avatar

    Staff: Mentor

    It's just a clever choice of variable name. The [itex]||[/itex] is meant to convey the meaning "parallel", as it does in mathematical notation.

    Parallel resistors are combined by the formula indicated, that is,

    [tex] R_{||} = \frac{1}{\frac{1}{R_1} + \frac{1}{R_2} + ... + \frac{1}{R_n}} [/tex]
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook