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(electricity) If the coils are pressed together then the electromagnentic field at the...
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The assumption in this answer is that the loops of the wire are in the plane perpendicular to the magnet.
(A) The field will be strengthened
This coiled wire forms a solenoid, which creates magnetic field approximately equal to
`B = mu*n*I` , where `mu` is a constant, n is the density of the loops and I is the electiric current in the wire.
If the coils are pressed together, the denisty of the loops increases while the current stays the same. Therefore, the magnetic field created by the coiled wire increases and the magnetic field at the poles of the magnet increases as well.
Posted by ishpiro on July 3, 2013 at 12:54 PM (Answer #1)
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