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 electric field

  1. Sep 17, 2008 #1
    A possible set of units of electric field, E, in terms of base units is:

    a) kg x m x s^-1 x C^-2
    b) kg x m^2 x s^-2 x C^-1
    c) kg x m x s^-2 x C^-1
    d) C x s^-1
    e) N x C^-1

    I believe it is E but i wondering if there is somthing I am missing. This is how I came up with that answer

    E = kq/r^2

    E = Nm^2/C^2 x C / m^2
    = Nm^2 x C / C^2 x m^2

    It says to use base units so for Newton am i suppose to incorporate a kg? I know that the unit for E is N/C but this problem just seems like it would be too easy if that was the answer
  2. jcsd
  3. Sep 18, 2008 #2


    User Avatar
    Homework Helper

    Hi Kathi201,

    Right; your answer of E is correct but I believe there is another correct answer. Think about what a Newton is in terms of other units.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook