Electric field and magnetic field relationship

Click For Summary

Discussion Overview

The discussion focuses on the relationships between electric field E and magnetic field B, particularly in the context of charged particles and their motion. Participants explore specific equations and conditions under which these relationships hold, as well as the implications of different scenarios involving velocity and field interactions.

Discussion Character

  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant presents two relationships between electric and magnetic fields, questioning the conditions under which they are valid.
  • Another participant suggests that the relationships hold only if v^2=c^2 for nonzero fields.
  • A participant clarifies that the first expression relates B and E for a charged particle moving in the x direction, while the second expression pertains to a different scenario involving a pure magnetic field and a moving observer.
  • Further inquiries are made about the terminology used for E' in the second case, as well as the implications of defining E in terms of force per charge.

Areas of Agreement / Disagreement

Participants express differing views on the conditions under which the relationships between E and B hold, indicating that multiple competing interpretations exist. The discussion remains unresolved regarding the specific definitions and implications of the terms used.

Contextual Notes

There are limitations in the discussion regarding the assumptions made about the velocity and the nature of the fields involved, as well as the definitions of the terms E and E'.

bernhard.rothenstein
Messages
988
Reaction score
1
We find in the literature the following relationships between electric field E and magnetic field B
B(z)=E(y)V/cc
and
E(y)=VB(z)
Is there a way to define the situations when they hold?
Thanks
 
Physics news on Phys.org
apparently only if v^2=c^2 for nonzero fields
 
Your first expression is the relation between B and E for a charged particle moving in the x direction.
Your second expression is for a different situation.It gives the relation between
E'_y and B'_z if you are moving with velocity v in the x direction with respect to a pure magnetic field (no E) B_z.
 
E and B

Meir Achuz said:
Your first expression is the relation between B and E for a charged particle moving in the x direction.
Your second expression is for a different situation.It gives the relation between
E'_y and B'_z if you are moving with velocity v in the x direction with respect to a pure magnetic field (no E) B_z.
thanks. is there a special name for E' in the second case?
 
E and B relationship

Meir Achuz said:
Your first expression is the relation between B and E for a charged particle moving in the x direction.
Your second expression is for a different situation.It gives the relation between
E'_y and B'_z if you are moving with velocity v in the x direction with respect to a pure magnetic field (no E) B_z.
Consider please the equation
F/q=uxB
If I call E=F/q E has that E a special name?
Thanks.
 

Similar threads

High School A Magnetic Misconception on Divergence 0/Closed Field Lines?
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Magnetic field when the area of the plates of a capacitor increases
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Induced Electric and Magnetic Fields Creating Each Other
  • · Replies 3 ·
Replies
3
Views
2K
High School Seeing both B field lines and E field lines at the same time
  • · Replies 22 ·
Replies
22
Views
3K
Undergrad Induced electric fields and induced magnetic fields confusion
  • · Replies 9 ·
Replies
9
Views
4K
Undergrad Magnetic field strength of a stack of magnets
  • · Replies 7 ·
Replies
7
Views
4K
Undergrad Defining the Forces from Magnetic Fields and Electric Fields
  • · Replies 4 ·
Replies
4
Views
2K
High School Confusion about one of Maxwell's equations
  • · Replies 11 ·
Replies
11
Views
2K
Graduate Electric and magnetic field lines in a plane wave of finite extent
  • · Replies 1 ·
Replies
1
Views
2K
High School Electric Field Created by a Finite Plate
  • · Replies 2 ·
Replies
2
Views
2K