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: Potential and electric field

  1. May 12, 2013 #1
    The electric potential V at any point (x,y,z) in space is given by V=4(x^2) volts (all in meters). The electric field at the point (1m,0m,2m) is?

    -->
    dV= - (E.dr),
    magnitude of r =sqrt(5),
    V at the point will be 4, which => 4=-*integration sign*E.dr
    how to solve this?
     
  2. jcsd
  3. May 12, 2013 #2

    ehild

    User Avatar
    Homework Helper

    Do it backwards. The electric field is equal to the negative gradient of the potential. Do you know what "gradient" is?

    ehild
     
  4. May 12, 2013 #3
    Definitely :P Thanks.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted