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: Back emf calculations

  1. Feb 9, 2013 #1
    1. The problem statement, all variables and given/known data

    i have a 200v dc motor with 20A flowing through the armature with a resistance of 0.3Ω, how do i calculate the back emf??? very confussed :(

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Feb 9, 2013 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

  4. Feb 11, 2013 #3
    Thanks for your help, not so confussed now :)
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook