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## Main Question or Discussion Point

Hello,

It is my understanding that a moving magnetic can induce an electrical current, and that conversely, and electrical current can move a magnet. I believe that this is the basis by which speakers work (changing electric field causes vibration of the magnet that generates the sound).

My question is how would one calculate the amount a permanent magnet would move when exposed to an electric field. Another way to put it, how would you calculate the force of an electric field on a permanent magnet. Would there only be a force given an AC current of would there also be a force with a DC current?

What factors would you need to know to be able to calculate this? I would assume you would need to know:

frequency (hz) and power (Amp) of the electrical current

mass of magnet

strength of magnet (what units? gauss?)

Thanks for any help one can offer.

Tord

It is my understanding that a moving magnetic can induce an electrical current, and that conversely, and electrical current can move a magnet. I believe that this is the basis by which speakers work (changing electric field causes vibration of the magnet that generates the sound).

My question is how would one calculate the amount a permanent magnet would move when exposed to an electric field. Another way to put it, how would you calculate the force of an electric field on a permanent magnet. Would there only be a force given an AC current of would there also be a force with a DC current?

What factors would you need to know to be able to calculate this? I would assume you would need to know:

frequency (hz) and power (Amp) of the electrical current

mass of magnet

strength of magnet (what units? gauss?)

Thanks for any help one can offer.

Tord