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!

Units of Coulomb's Constant

  1. Dec 17, 2011 #1
    Coulomb's constant, which appears in Coulomb's Law, contains ε0.

    The units of ε0 being F/m

    Are the units of Coulomb's constant therefore F/m ?

    Thank you.
     
  2. jcsd
  3. Dec 17, 2011 #2

    PeterO

    User Avatar
    Homework Helper

    I would have thought F-1m since ke = 1/(4∏εo)
     
  4. Dec 17, 2011 #3

    ehild

    User Avatar
    Homework Helper
    Gold Member

    Yes, but farad can be derived from the basic units of the SI system, so the unit of ε0 is A2s4kg-1m-3 in terms of the basic SI units.

    ehild
     
  5. Dec 17, 2011 #4

    ehild

    User Avatar
    Homework Helper
    Gold Member

    For parallel plate capacitors, C=εA/d (A is the surface of the plates, d is the distance between them) so farad=[ε]m.

    ehild
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Units of Coulomb's Constant
Loading...