1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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!

Strength of electric fields

  1. Jul 8, 2011 #1
    1. The problem statement, all variables and given/known data
    lectric fields of varying magnitudes are directed either inward or outward at right angles on the faces of a cube, as shown in the figure.

    What is the strength and direction of the field on the face F? (The cube does not contain any charges. Take EA = 13 N/C, EB = 26N/C, ED = 22 N/C, and EE = 21 N/C.)

    3. The attempt at a solution

    I am not sure how to do this problem any hints? i you add up the flux but it doesn't have a direction in which the electric field is going so i am confused.

    Attached Files:

  2. jcsd
  3. Jul 8, 2011 #2
    Look at the picture to determine the sign of the flux. for arrows pointing outward take the flux to be positive, and inward to be negative. the direction is perpendicular to each face.
  4. Jul 8, 2011 #3
    arg i didn't look at the 10 which was C
    thanks !
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Strength electric fields Date
Electric field strength at a point between charges Wednesday at 9:17 PM
Calculating electric field strength Jan 15, 2018