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: Question about resistors in Parallel

  1. Feb 3, 2012 #1
    1. The problem statement, all variables and given/known data
    I need to devise an experiment to show that the total resistance decreases as additional resistors are added to a parallel circuit of resistors. All resistances of the resistors are the same.


    2. Relevant equations
    R(Total)=1/R(1)+1/R(2)+....+1/R(n)


    3. The attempt at a solution
    So far I can work it out mathematically say the resistance of the resistors is 20 Ω

    For two resistors:
    R(Total)=10 Ω
    For three:
    R(Total)≈6.7

    So I can confirm that the total resistance of the circuit is increasing but I'm having problems devising the experiment.

    Thanks in advance! :D
     
  2. jcsd
  3. Feb 3, 2012 #2
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook