the eddy currents in fi 122 16

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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.
C.
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 ccw 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
V
on th
V
can
N
S
powerful
electromagnet
can N
non
metallic
bin
view from above
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)?
metallic
bin
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.
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. C. 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 ccw 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 V on th V can N S powerful electromagnet can N non metallic bin view from above 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)? metallic bin 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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