S Eddy currents are ans and other non
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Transcribed Image Text:2. Magnetic Separators: Eddy currents are used to
separate aluminum cans and other non-magnetic
metals from trash. In this case a fast conveyor belt
quickly carries the trash pass a very strong
electromagnet. A company in Erie (Eriez Magnetics)
makes these devices.
a. What is the direction of the eddy currents induced
in the can as it enters the magnetic field? (Choose
one.)
• Out of the page on the left and into the page on
the right in the can (or cow when viewed from
above).
Into the page on the left and out of the page on
the right in the can (or cw when viewed from
above).
conveyer belt
can
can
non
metalic
powerlul
electromagnet bin
view from above
metallic
bin
metallic
bin
b. The fact that induced eddy currents are created in the can as it enters the magnetic field means that we can
treat the can as a small electromagnet. Which end of the can is the north pole (top/bottom)?
c. What happens to the can when it goes quickly over the magnet? This effect has also been purposed for
magnetic levitation trains. Note the main magnetic force on the can is vertical.
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