Help me please about Fleming's Rule

  • Context: High School 
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Discussion Overview

The discussion revolves around Fleming's Rules, specifically the Left Hand Rule and Right Hand Rule, and their applications in understanding the movement of particles in magnetic fields. Participants explore the differences between the two rules and their relevance in various contexts, including electric motors and generators.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • Some participants express uncertainty about the existence of Fleming's Left Hand Rule, suggesting that they are only familiar with the Right Hand Rule.
  • One participant describes using the Right Hand Rule for determining the movement of negative particles in magnetic fields, indicating a method of flipping the direction at the end.
  • Another participant mentions that some educators adapt the Left Hand Rule for determining forces, although they personally do not agree with this adaptation.
  • A participant explains that Fleming's Left Hand Rule applies when current produces motion in a wire within a magnetic field, while the Right Hand Rule applies when motion produces current.
  • A later post introduces a question about induced electromotive force (emf), indicating a potential related topic of interest.

Areas of Agreement / Disagreement

Participants generally disagree on the recognition and application of Fleming's Left Hand Rule, with some asserting its existence and others questioning it. The discussion remains unresolved regarding the clarity and utility of both rules.

Contextual Notes

There are varying interpretations of how Fleming's Rules are applied in different scenarios, and some participants note that the orientation of the magnetic field is a matter of convention. Additionally, the discussion includes references to specific applications in electric motors and generators, but lacks consensus on the definitions and uses of the rules.

YOOKUNG
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I am not sure about Fleming's Rule

The difference between Fleming's Left Hand Rule and Fleming's right Hand Rule.
Fleming's left hand rule there or not ? I think ,there are only Fleming's right Hand Rule.
 
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I've never heard of the left hand rule. I've only used the right hand rule for figuring out the movement of particles in magnetic fields. For negative particles, you just use the right hand rule as usual, and flip the direction of the particles movement at the end.
 
Trexman89 said:
I've never heard of the left hand rule. I've only used the right hand rule for figuring out the movement of particles in magnetic fields. For negative particles, you just use the right hand rule as usual, and flip the direction of the particles movement at the end.


For left hand rule, I not sure >>> http://en.wikipedia.org/wiki/Fleming's_left_hand_rule_for_motors
 
Bear in mind that the orientation of B field is just a convention.

Some teachers of mine use an adaptation of the left rule to determine the direction of certain forces - they say it avoids confusion, but I don't share this opinion.
 
it is very easy, you can apply fleming's left hand rule, when current produces motion in the wire under the external magnetic field. e.g, when you tun on the switch , the fan begins to rotate, electric motor also doing the same, but fleming's right hand rule, when motion produces current in the wire under the external magnetic field. e.g, electric generator. when water falls on the turbine the coil rotates under the magnetic field , the current produces
 
any body know about induce emf
 

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