Electric force with a moving conductive bar in a magnetic field

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Homework Help Overview

The discussion revolves around the behavior of a conducting bar moving in a magnetic field and the resulting electric field generated within the bar. Participants are exploring the direction of the electric field induced by the motion of the bar in the magnetic field.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are attempting to apply the right-hand rule to determine the direction of the induced electric field. There is some confusion regarding the correct application of the rule and the terminology used, with references to different methods for determining the direction of the electric field.

Discussion Status

The discussion is ongoing, with participants seeking clarification on the application of the right-hand rule and its implications for the direction of the electric field. There is an exchange of ideas regarding the methodology, but no consensus has been reached on the correct interpretation.

Contextual Notes

Participants are discussing the implications of the right-hand rule in the context of electromagnetic induction, with some referencing different approaches to the problem. There may be a misunderstanding regarding the terminology used to describe the rules applied.

slain4ever
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Homework Statement


A conducting bar is moved to the right in a magnetic field going into the page, an electric field is set up in the bar. Is this electric field upwards or downwards.

The Attempt at a Solution


i think that because a current is being induced in the bar you use the right hand rule but the current goes the other way in the thumb therefore the electric field is up the bar. Is this correct?
 
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slain4ever said:

Homework Statement


A conducting bar is moved to the right in a magnetic field going into the page, an electric field is set up in the bar. Is this electric field upwards or downwards.

The Attempt at a Solution


i think that because a current is being induced in the bar you use the right hand rule but the current goes the other way in the thumb therefore the electric field is up the bar. Is this correct?
The electric field is given by:

[tex]\vec{E} = \vec{v} \times \vec{B}[/tex]

So use the right hand rule for cross product (use the index finger for v and the middle finger for B and the thumb will give the direction of E).

AM
 
is that a yes, by the way i think you misunderstood, i use the right hand palm rule, not the flemming thing.
 
slain4ever said:
is that a yes, by the way i think you misunderstood, i use the right hand palm rule, not the flemming thing.
If you use the right hand two-finger-thumb rule to determine cross product, you will not be confused.

AM
 

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