EM5.6 Transformer Demonstration (Jumping Rings)
This consists of metal rings lying in a solenoid. A metal bar is placed in the center of the rings to extend the field. When current is applied to the solenoid, an EMF is induced in the rings in such a way as to oppose the created B field. This causes the rings to be thrown vertically upward. One of the rings has a gap, so that no EMF is induced. Thus, it does not jump off. Variations include using a series of rings with and without gaps.
Equipment Location: Shelf C5-4