Electromagnetic Induction

Electromagnetic Induction - Electromagnetic Induction Lab 8...

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Electromagnetic Induction Lab 8
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Purpose To explain the phenomenon of induced emf by - moving a magnet near the coil - moving a second coil with a current in it near the first coil, - and changing the current in the second coil. Description In this experiment, we induced in emf in the three ways mentioned in the purpose. First, emf was induced by a permanent magnet. This is done by moving a magnet in and out of the coil. Second, emf was induced by moving a coil with a current. A coil with a current has a magnetic field and if this coil is moved with respect to another coil the changing magnetic field will induce an emf. The final way emf was induced was by changing the current in the coil. Theoretically, if current is changed, the magnetic field changes. Theory A “steady” magnetic field will not cause a current to flow in a circuit. It is a time changing magnetic field that “induces” a current to flow. The changing magnetic field produces an electric field which is not conservative.
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This note was uploaded on 02/16/2010 for the course PHYSICS V85.0012 taught by Professor Atmar during the Spring '05 term at NYU.

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Electromagnetic Induction - Electromagnetic Induction Lab 8...

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