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Electromagnetic field (loop)

Applying current in various directions to a single loop of wire. Primitive electric motor? Created by Brit Cruise.

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  • leaf green style avatar for user 福龍丸
    This time (compared to the previous video in this playlist) the wire is placed both above and below our compass. What's the effect of this on the observed motion?
    (4 votes)
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    • piceratops ultimate style avatar for user Rune Barrett
      As he showed in the last video when you hold the wire above the compass, you see clockwise motion. When you hold the wire below, you see counterclockwise motion.
      Thats the reason for the tapping on the battery poles. If he didn't there would be no motion because there is both clockwise and counterclockwise drag. (which would hold the needle in the most "relaxed" position.
      (7 votes)
  • leaf green style avatar for user 福龍丸
    So, "in various directions" means touching the battery poles at different spots? The relative position of the two spots has something to do with the motion of the needle?
    (3 votes)
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    • duskpin ultimate style avatar for user Exponentially Radical
      If you watch the Brit's hands, on the battery; then you'll see he switched his electrode orientation. He changed the direction of the current in the wire. He tried to demonstrate that his can change the direction of needle deflection and the direction of needle spin. This kind of reversal may allow a toy car to move forward or reverse, without changing batteries. By changing contact orientation, a wheel may spin a different direction.
      (5 votes)
  • aqualine ultimate style avatar for user fatterdanner
    That reminds me of how a hard drive works, what kind of motor would that be called?
    (3 votes)
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  • leaf red style avatar for user J.
    What's going on in this video?
    (3 votes)
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  • male robot donald style avatar for user Function 97
    Why does the needle change directions when you switch the clips on the end of the wire from negative to positive?
    (2 votes)
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  • starky ultimate style avatar for user shan
    In the blue print, it mentions an electric motor. What is that and what does it do? Somebody please answer this.
    (2 votes)
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  • leafers ultimate style avatar for user James Terpening
    Does connecting a compass to a battery hurt the compass in any way?
    Thanks!
    (1 vote)
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  • leaf blue style avatar for user mohak mansharamani
    Can the magnetic fields of an electromagnet can be redirected in one direction? If yes , how?
    (1 vote)
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    • leafers tree style avatar for user Marshall  Dubois
      i imagine it's less like a beam, and more like a wave- sort of how heat eminates outward from a fireplace. the magnetic field is diffused in the area immediately surrounding the wire. but you can control the charge of the magnetic field, unless i'm way off with this clockwise/counterclockwise thing
      (1 vote)
  • piceratops ultimate style avatar for user datta.preetha
    How can we ascertain the direction of magnetic field in a loop?
    (1 vote)
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  • winston default style avatar for user adinsx0001
    Why do magnetic fields of the same direction strengthen each other in a coil?
    (1 vote)
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Video transcript