E-field for infinitely long cylinder

  • Thread starter Thread starter LakeMountD
  • Start date Start date
  • Tags Tags
    Cylinder E-field
Click For Summary
SUMMARY

The discussion centers on deriving the electric field equation for an infinitely long cylinder, specifically E=2*pi*rho*K*r. Participants emphasize the application of Gauss's Law and the importance of symmetry in simplifying the problem. A suggestion is made to draw a diagram and select an appropriate Gaussian surface to facilitate the calculations. The conversation highlights common pitfalls in the application of Gauss's Law, particularly in the cancellation of terms.

PREREQUISITES
  • Understanding of Gauss's Law
  • Familiarity with electric field concepts
  • Basic knowledge of cylindrical symmetry
  • Ability to perform algebraic manipulations
NEXT STEPS
  • Study the derivation of electric fields using Gauss's Law
  • Explore examples of cylindrical symmetry in electrostatics
  • Learn about Gaussian surfaces and their applications
  • Review common mistakes in applying Gauss's Law
USEFUL FOR

Physics students, electrical engineers, and anyone interested in electrostatics and the application of Gauss's Law in deriving electric field equations.

LakeMountD
Messages
59
Reaction score
0
ifthis is an infinitely long cylinder how can i derive an equation for finding the magnitude of the electric field? i have the answer which is E=2*pi*rho*K*r but i don't understand how they got it.
 

Attachments

  • adsf.JPG
    adsf.JPG
    7.2 KB · Views: 566
Last edited:
Physics news on Phys.org
did you try using gauss' law?... it is straight forward... draw a picture, pick a reasonable gauss' surface, and do the simple math (no need calculus)
 
Use Gauss's law and take advantage of symmetry.
 
i did but we are getting the wrong answer when we cancel things out.. that's why i was asking here.
 
Show your work and we can take a look.
 

Similar threads

What does having 3d symmetry 2d symmetry and 1d symmetry mean?
  • · Replies 36 ·
2
Replies
36
Views
2K
Calculating flux through a plane cutting two concentric cylinders
  • · Replies 26 ·
Replies
26
Views
1K
Concentric conducting cylinders
  • · Replies 7 ·
Replies
7
Views
854
What is the electric field inside an infinite cylinder?
  • · Replies 7 ·
Replies
7
Views
4K
Electric Field Inside Cylindrical Capacitor
  • · Replies 2 ·
Replies
2
Views
3K
Electric Field at the end of a Half-Infinite Cylinder
  • · Replies 4 ·
Replies
4
Views
3K
Electric field is constant around charged infinite plane. Why?
  • · Replies 4 ·
Replies
4
Views
5K
Pressure versus stress in uniformly charged sphere
  • · Replies 11 ·
Replies
11
Views
1K
Velocity along the cylinder axis
  • · Replies 18 ·
Replies
18
Views
2K
Electric field due to charges between 2 parallel infinite planes
  • · Replies 9 ·
Replies
9
Views
833