MIT Physics Demo -- Forces on a Current-Carrying Wire

Two flexible wires are suspended vertically. The wires are conected in series or parallel to a 12V storage battery. When the wires are connected in series and power is applied they will repel each other; when they are connected in parallel they weill attract one another.

This effect is due to the magnetic fields created by the charge flowing through the wires. When the wires are in parallel, the currents in each are going in the same direction and thus attract. In series the cur
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Two flexible wires are suspended vertically. The wires are conected in series or parallel to a 12V storage battery. When the wires are connected in series and power is applied they will repel each other; when they are connected in parallel they weill attract one another.

This effect is due to the magnetic fields created by the charge flowing through the wires. When the wires are in parallel, the currents in each are going in the same direction and thus attract. In series the currents are going in opposite directions and repel.
See original video on MIT TechTV - http://techtv.mit.edu/videos/813

Category:

Education

Tags:

• mittechtv
• physics
• demo
• mit
• electromagnetism
• magnet
• current
• electricity
• wire
• heat
• induction
• engineering
• science
• electrica

[woo216]

sire the video is quite flabergasting yessss

[MrAnguswangus]

Ed Leedskalnin would be proud.

[jag9998]

Exactly what I was looking for, thank you.  I couldn't, for the life of me, remember the right hand rule.

[TheMACcar]

@Thisisnotmyrealname8 hahahahahah!!!!!

[Thisisnotmyrealname8]

@TheMACcar Gravy IS magnetism. You don't know what you're talking about.

[TheMACcar]

I could stand by huge electromagnets all day and not feel any effect.

Just for those who think gravy is magnetism. :)

[Real1ty]

Nice way to demonstrate the rotation of electromagnetic flux around a current carrying wire :)

[ricomajestic]

How much current do you have going through those cables and what type of cables are you using? What are the best specs for doing this demo?

[Paranoidhuman]

It was really good seen something that theory predicts.

I think it would be more didactic for non-physicist (or anyone familiarized with electricity) if instead of writing series or parallel you guys would've write current in opposite or same direction.

[sn1pe352]

god bless you guys for explaining how micro helix motions and atomistic contractions and expansions can be negative and or positive depending on currents.

this video sums up our entire realities , from our heart to every atom in the universe