Talk:Fleming's right-hand rule

Problem

The picture is not obvious enough. The middle finger is bent inward and the other two are straight. Of course with a little deduction (or induction) one can figure it out, but does the common person do that? NO. how confusing @_@

-Kristan Wifle

Huh?

I know the right hand rule for resulting motion from a preexisting current and field, with the same hand configuration, except the Index finger represents I (current), the Birdie finger represents B (field), and the Thumb represent THRUST (force). It gives the opposite result of what is stated. I understand this is a generator thing, but perhaps the article should be specific about what situation it works for and for situations it does not work for. I can foresee someone using this the wrong way. Mauvila 02:38, 14 August 2006 (UTC)

I agree that these are confusing. To help address that, I've made some edits to Right-hand rule, Fleming's right hand rule, and Fleming's left hand rule. I added the mnemonic you listed above (that's the same one I learned, though using the palm instead of the middle finger) as an alternate at Fleming's left hand rule, since that seemed to be the best place for it, since the motor/generator distinction seemed more important than the right hand/left hand distinction. I also found some other images on the various Wiki projects, so I added them. But these pages still need a lot of work, and I'd encourage anyone with subject matter expertise to be bold and help reorganize them. --Arcadian 12:49, 14 August 2006 (UTC)

Can someone add in about faraday's Law which finger is the magnetic field/current/force?

What a tangle! (Re: articles on FLHR, FRHR, FBI, then a separate one on Left-Hand Rule). OK, I'll rise to the challenge. "Be Bold," you say. OK, I'll try. But perhaps not today... it's too close to the weekend. I will have a go next week, if no-one else has beaten me to it. TheAMmollusc (talk) 11:00, 25 March 2011 (UTC)

What I propose to do (next week) is to copy-paste the material from this FRHR page to the end of the FLHR page, then to Move the FLHR page to page called "Fleming's Left Hand Rule and Fleming's Right Hand Rule". Then, I will make this FRHR page into a redirect, and will check as many of the redirect pages to the current FLHR page that I can find. Does anyone have any objections, or better suggestions? TheAMmollusc (talk) 11:08, 25 March 2011 (UTC)

I will, of course, not just copy-paste, but then do the necessary stitching together. The new page will have an explanation of when to use the LHR and when to use the RHR. I will also expand on any notes about conventional current flowing from positive to negative. TheAMmollusc (talk) 11:10, 25 March 2011 (UTC)

OK, I've made a start. I'll spread the work out over several lunch-times. If anyone wishes to view the current state of the draft article, or even to help edit it, I am currently developing it at my User:TheAMmollusc/Incubation page. TheAMmollusc (talk) 10:52, 28 March 2011 (UTC) Just to confirm that the development of the page continues, and it is starting to shape up (hopefully for a transfer to the live page on Friday). TheAMmollusc (talk) 06:53, 30 March 2011 (UTC)

There, I've done it. It's not perfect, so I look forward to any polishing that others are able to do. In particular, it needs a diagram to illustrate the last paragraph of the "Physical basis of why the rules apply" section, showing the cross-section of a wire in a horizontal magnetic field, with all the lines of force bunched round underneath it. (My skills aren't up to this, I'm afraid). I did think of moving the article to "Fleming's left hand rule and Fleming's right hand rule", but have left it as "Fleming's left hand rule for motors" for the present. What do others think? TheAMmollusc (talk) 12:32, 1 April 2011 (UTC)

Not really.. Force is the cross product of (charge*velocity) and B the magnetic field. F = (qv)X B - so get the sign correctly the first finger should be in the direction of current, the middle finger in the field direction. Here is an example. https://www.phy.duke.edu/~schol/phy152/howtos/rhr_howto.pdf — Preceding unsigned comment added by Kijacob (talk • contribs) 02:30, 3 March 2017 (UTC)

Induced current?

Strictly speaking it should be induced emf as current is present only if the circuit is closed.

Define "Current" in this article

The term "Current" in this article is undefined. There are two opposite definitions of current in modern use by engineering and technical people. Early physicists assumed the flow of positively charged particles, flowing from the positive terminal of the source of emf toward the negative terminal. Engineers use this system to this day.

However, with the developing model of the atom comprised of electrons, protons and neutrons, and the discovery that the primary carriers of current in most materials is due to the movement of free electrons, the definition of "current" for other areas of technology has become the flow of electrons in a circuit, the direction being from negative to positive.

The term "Current" in this article does not identify whether it refers to the flow of electrons or of positive charge carriers. This needs to be addressed.

In electrical engineering, when the type is not specified, current is always conventional current, flow of positive charge. --Chetvorno^TALK 19:48, 27 July 2021 (UTC)

Update to mnemonics

Currently the mnemonic that is listed on the page i.e. the FBI one is also on the Fleming's left-hand rule for motors#Fourth variant (FBI) page. so a person might get confused remembering which one refers to which. and there is only one mnemonic on this page

So we could add an another mnemonic just like there are lists of mnemonics on the left hand rule page.

One of them could be the IBM one

On the right hand starting from the middle finger

Middle Finger denotes -> I i.e. the Current (Denoted by I)

Forefinger denotes -> B i.e. the Magnetic Field (denoted by B)

And the Thumb denotes -> M i.e. the Motion of the Conductor

And as IBM is also quite well known since old days, so it might be relatable for people. Arnavofficial (talk) 09:56, 28 March 2022 (UTC)