Direction of Electric field (EM induction)

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Homework Help Overview

The discussion revolves around understanding the direction of the electric field in a wire being pulled to the right, particularly in the context of electromagnetic induction. Participants are exploring the relationship between moving charges and the resulting electric field direction.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are attempting to determine the direction of the electric field based on the movement of charges and are questioning whether to consider moving charges as positive or negative. There is also a discussion about which particles are mobile in the wire and the implications of this on current direction.

Discussion Status

The discussion is active, with participants providing insights and raising questions about the nature of current and charge movement. Some guidance has been offered regarding the convention of positive charge movement, but there is no explicit consensus on the overall direction of the electric field.

Contextual Notes

Participants note that there is no complete circuit in the wire, which raises questions about the existence of current and the forces acting on the charged particles. This context may influence their reasoning about the electric field direction.

Rod Alexei
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Homework Statement


In which direction would the electric field in the wire point if the wire were pulled to the right?
p62.png

Homework Equations


Right hand rule
F=qvXB

The Attempt at a Solution


My answer is downward. I am confused whether I should take the moving charges as positive or negative since this would determine the direction of the current.
I know that the direction of the current is the same as the electric field. (for positive)
Thanks!
 

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Rod Alexei said:
I am confused whether I should take the moving charges as positive or negative since this would determine the direction of the current.
Which particles are mobile? Electrons or protons?
 
Electrons. But we take the convention of moving "positive charges"
 
There is no "current" in this wire as there is no complete circuit. Protons and electrons both are moving towards right as the wire is dragged. What is the magnitude and direction of the forces acting on both the particles? What will happen because of these forces?
 

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