Coke Can in a Uniform Magnetic Field,

Location:

cokecan.jpg

Description:

This demonstrates what happens to a coke can in a block uniform magnetic field

Equipment

Location

ID Number

apparatus

Ingersoll Museum

Setup:

  1. No Setup Needed

Cautions, Warnings, or Safety Concerns:

  1. Can could fall off spindle, don't bump table

Demonstration: This shows what happens when you have alternating magnetic fields between materials. A magnetic field is partially block by a thick piece of aluminum. The coke can also has a magnetic field with a direction opposite of the electromagnet. What happens is that the coke can being so thin begins to demagnetize as the electromagnet 's B field reaches maximum. The aluminum block being thicker become magnetized with a B field direction opposite of the electromagnet's field. The magnetization of the thick aluminum block causes an attraction force between the block and the can. This then causes the can to spin in the direction of the aluminum block's B field.

References:

  1. HyperPhysics Electric Circuit Concepts Alternating Currents

  2. Magnetic Eddy Currents

Demonstrations

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