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Anonymous
Anonymous asked in Science & MathematicsPhysics · 1 decade ago

helmholtz coil with more than two loops?

I have researching around helmholtz coils, and I wonder whether it is possible to produce an uniform magnetic field using more than 2 coils. That is 3 or more coils connected in series and placed in such a way that their separation is equal to their radius. Would that possibly work?

Thanks.

Update:

Okay that answer was great... but no exactly what I was looking for. A helmholtz is a special type of coil that is used to produce an uniform magnetic inside it. My question was whether it is possible to produce a longer Helmoltz Coil by using more than 2 sets of coils.

3 Answers

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  • 1 decade ago
    Favorite Answer

    It should work, but the ideal separation might be slightly different than the radius.

    However, if you're going to the trouble of using more than 2 coils, it's generally easier to make a solenoid instead.

  • Anonymous
    1 decade ago

    A coil produces an uniform magnetic field inside it only if its length is very big. Outside the coil the field is never uniform. In many cases in order to obtain an uniform magnetic field inside the coil we realize in the different points of the coil different number of loops per unit length.

  • 5 years ago

    emf = -N x BA cos (angle) / delta t you forgot the cosine of the angle!

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