A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • 5 years ago

Another more specific question: In Module 3 in the course notes (p.2-25) is written that “Notice the discontinuity in electric field as we cross the plane. The discontinuity is given ...then the normal component of the electric field across that surface always exhibits a discontinuity with ΔEn=σ/ε0”. Could someone explain this please?

  • This Question is Closed
  1. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The charge lies in a plane where z = 0 (the x-y plane) Above the plane, in the positive z region, the electric field points away from positive charge, and so will be in the positive-z direction (if the sheet of charge is positive). On the other side of the plane of charge, in the negative z region, the electric field also points away from positive charge, and so must point in the negative z direction (if the sheet of charge is positive). That means that the electric field must go from pointing in the positive z direction just above the sheet of charge to pointing in the negative z direction just below the sheet of charge - that's a discontinuity. The notes show how the magnitude of the field was calculated (\[\sigma/2\epsilon _{0}\]) just above and below, but opposite in sign (direction) so that the total change in E is \[\sigma/\epsilon _{0}\]

  2. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...


  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.