lenz - Note-A-Rific Lenzs Law A question still remains when...

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Note-A-Rific: Lenz’s Law A question still remains when it comes to generating electricity using a changing magnetic field… what direction does the current flow? Just a few years after Faraday discovered EM induction, the German physicist Heinrich Lenz came up with a rule based on some logic. Lenz started with a general idea and worked out his rule. If you use a magnet to induce an electrical current to flow through a coil of wire, you will actually be creating a brand new magnetic field in the coil . o This magnetic field is called an induced field . o Remember, any coil of wire with current flowing through it is a solenoid, a magnet. Lenz wondered if the induced field would attract or repel the magnet. o He knew that he would also have to look at a couple of different cases. ! Magnets being pushed into the coil. ! Magnets being pulled out of the coil. o We’ll look at the different possibilities here, and decide (based on our knowledge of physics) which one is correct. o
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This note was uploaded on 02/29/2012 for the course PHYS 227 taught by Professor Rabe during the Fall '08 term at Rutgers.

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lenz - Note-A-Rific Lenzs Law A question still remains when...

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