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Jumping Rings

Electromagnet with iron core sits next to power stat.

Concept Overview:

1. Lenz's Law

2. Electromagnetic Induction

Lecturer Procedure

Task(s)Expected Result

1. Place aluminum ring on core.

2. Press the tap switch.

Ring will be launched from core.

1. Place ring with a break in it on the core.

2. Press the tap switch

Ring will not be launched.

Variation: For added effect, place the rings in liquid nitrogen prior to launching them.  If this is desired, please specifically request liquid nitrogen. 

Transcript

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Identifier
E&M: Ind - 010