Direction of the induced current

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Homework Help Overview

The discussion revolves around predicting the polarity of a capacitor in a given setup, with references to the right-hand thumb rule and the movement of electrons versus conventional current. Participants express differing interpretations of the direction of current flow and its implications for capacitor polarity.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants attempt to apply the right-hand thumb rule to determine the capacitor's polarity and question the movement of electrons in relation to conventional current. There is also a discussion about the implications of current direction on the capacitor's charge.

Discussion Status

The discussion is active, with participants questioning each other's assumptions about current direction and the behavior of electrons. Some guidance is offered regarding the relationship between conventional current and electron flow, but no consensus has been reached.

Contextual Notes

There is mention of differing answers from various sources, indicating potential confusion or ambiguity in the problem setup. Participants are also grappling with the implications of their assumptions about current direction and charge polarity.

Suyash Singh
All sites and books give different answers for this question:(

Homework Statement


predict the polarity of the capacitor in the diagram below
upload_2017-9-6_10-10-12.png


Homework Equations


right hand thumb rule
AB is capacitor

The Attempt at a Solution


The side facing south pole becomes south and north facing side becomes north hence electricity travels from B to A and thus B becomes positive and A is negative.
Am i correct?
 
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Suyash Singh, what is moving in your setup, and in what direction is it moving??
 
NascentOxygen said:
Suyash Singh, what is moving in your setup, and in what direction is it moving??
electrons are moving in a direction opposite to current
 
Suyash Singh said:
electrons are moving in a direction opposite to current
So I was mistaken to believe the arrows denote movement?
 
Suyash Singh said:
...

The Attempt at a Solution


The side facing south pole becomes south and north facing side becomes north
I agree with this.
hence electricity travels from B to A and thus B becomes positive and A is negative. ...
I disagree with this. Conventional current flows from B to A, but conventional current is positive, so in the opposite sense to electron flow. So A becomes positive and B negative.
 
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