Question concerning magnetic fields

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Discussion Overview

The discussion revolves around the nature of magnetic fields, specifically whether they possess a charge and how they interact with charged particles like protons and electrons. Participants explore concepts related to magnetic fields, forces on charged particles, and the distinction between fields and their sources.

Discussion Character

  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant expresses confusion about whether magnetic fields have a charge and how to determine the charge of particles affected by the field.
  • Another participant clarifies that magnetic fields do not have a charge and instead exert forces on charged particles according to the right-hand rule, referencing the equation F = qB × v.
  • A third participant corrects the notation of the force equation, suggesting it should be F = qv x B, and questions if the original poster meant to ask about the charge of the sources that produce magnetic fields.
  • A later reply emphasizes the distinction between fields and their sources, questioning whether electric fields or gravitational fields have charges or masses, respectively.

Areas of Agreement / Disagreement

Participants generally agree that magnetic fields do not have a charge, but there is some confusion regarding the relationship between fields and their sources. The discussion remains unresolved regarding the original poster's understanding of these concepts.

Contextual Notes

There are limitations in the discussion regarding the clarity of definitions and the assumptions made about the nature of fields versus their sources. Some mathematical notation is also corrected without resolving the underlying conceptual questions.

jlo4
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So I am somewhat confused on magnetic fields. Do they have a charge? Because I have come across many problems that involve either protons or electrons and whether or not they are deflected by the field. My question is if the fields do have a positive or negative charge, how are you suppossed to know what the charge is? Do you use the right hand rule for this or what? Any help to clear my understanding would be greatly appreciated!
 
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The magnetic field is just a field. It has no charge. It causes a force on a positive or negatively charged particle given by the right-hand rule.

F = qB \times v

where x is the cross product.
 
It's F = qv x B. but maybe, jlo4, you meant to ask if what produces a magnetic field has some sort of charge?
 
jlo4 said:
So I am somewhat confused on magnetic fields. Do they have a charge? Because I have come across many problems that involve either protons or electrons and whether or not they are deflected by the field. My question is if the fields do have a positive or negative charge, how are you suppossed to know what the charge is? Do you use the right hand rule for this or what? Any help to clear my understanding would be greatly appreciated!

Why pick on just magnetic fields? Do "electric fields" have a charge? Do gravitational fields have a mass?

One should not confuse fields with sources, and one should not confuse the origin of these sources and sources.

Zz.
 

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