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Can you reverse a magnetic field using electricity?
I have a little science experiment that I am curious to know if it is possible and how it might be accomplished. No, this is not for school, I'm just thinking of ways thing work. Too much exposure to "How It's Made" and "Mythbusters" shows I guess.
Here's my issue. Let's say I have metal plate (Plate A) that is ferromagnetic. On another plate (Plate B), I have a normal earth magnet that is "normally" attracted to Plate A.
What I would like to do is pass an eletric charge through Plate A which would reverse the magnetic charge and force Plate B to jump away from Plate A...much like when you have two magnets that will be attracted to each other when they face a certain way, but are repelled by each other if you flip the magnet over.
What would you need to do to Plate A to cause that reaction?
4 Answers
- JonLv 51 decade agoFavorite Answer
What you described wouldn't work because the magnetic fields would be perpendicular. Say if the device you made were flat on your table, the magnet's field would be left to right, while the metal plate's field would be up and down.
If you had a coil of wire, and you inserted a cylindrical magnet into it, then applied a current, the magnet would indeed shoot out of the coil. In doorbells (old and new), as the previous post mentioned, it would fly out and strike a bell. This device is called a solenoid and is still widely used in many devices. One starts your car, for instance.
- Anonymous5 years ago
can you realize what's going on by looking at stereo speakers
a speaker contains a magnet which is driven by electricity
- Anonymous4 years ago
you dont would desire to combine the currents. calculate the rigidity vector from each and each modern-day and then calculate the resultant vector. with recognize to the beginning place, then be sure the attitude between the resultant and component P.
