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!

Effect of transformer

  1. Apr 5, 2014 #1
    I have a transformer AC/AC which says that the ingoing effect is 27W and the outgoing effect is 20VA.

    Wich means it loses about 7 J every second to heat. (?)

    Any idea as to why it is written as VA instead of W on the outgoing line?
    Last edited: Apr 5, 2014
  2. jcsd
  3. Apr 5, 2014 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Google "What is the difference between VA and W" without the quotes.
  4. Apr 5, 2014 #3
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook