Electric n magnetic field vectors

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Homework Help Overview

The discussion revolves around the relationship between electric and magnetic fields, particularly in the context of electromagnetic waves and Maxwell's equations. The original poster presents a specific electric field vector and inquires about the corresponding magnetic field vector.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants explore the relationship between electric and magnetic fields, referencing Maxwell's equations. Some question the existence of a direct relation, while others suggest that understanding the direction of propagation in plane waves can help determine the magnetic field.

Discussion Status

The discussion is ongoing, with participants offering different perspectives on the relationship between electric and magnetic fields. Some guidance has been provided regarding the use of Maxwell's equations, but there is no explicit consensus on the nature of the relationship.

Contextual Notes

There is some confusion regarding the interpretation of the original question, as noted by one participant who misread the details. The context of electromagnetic waves and the specific form of the electric field vector are central to the discussion.

benitta
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what is the relation between the electric and magnetic field ?
if the electric field vector is e = E exp[i(kx-wt)]j what is the magnetic field vector?
 
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Hi benitta,

I don't believe there is such a relation.

However, the maxwell equations tell us that there is a magnetic field associated with a change in electric field [itex]\partial\vec{E}/\partial{t}[/itex].
 
benitta said:
what is the relation between the electric and magnetic field ?
if the electric field vector is e = E exp[i(kx-wt)]j what is the magnetic field vector?
All you need to do is solve Maxwell's equations. See
http://www.geocities.com/physics_world/em/mawell_eq.htm

Pete
 
Hi again,

Sorry I misread your question and missed the "t term" in there.
 
In the case of a plane wave you can find B if you know the direction of propagation.
 
thanks pmb phy
 

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