5K20.26 - Lenz's Law - Repulsion Rings

Code Number:
5K20.26
Demo Title:
Lenz's Law - Repulsion Rings
Condition:
Excellent
Principle:
Lenz's Law, Induction
Area of Study:
Electricity & Magnetism
Equipment:
Suspended Aluminum Rings and Magnets.
Procedure:

Suspend the chosen aluminum ring. Insert the magnet into the ring. The solid ring will be move away from the magnet, while the broken ring will show not effect.

References:
  • Roberto Hessel, "More on Faraday's and Lenz's Laws - Qualitative Demonstrations", TPT, Vol. 49, # 3, March 2011, p. 184.
  • Chang Geng Zhang and Shi Feng Hu, "Another Way to Demonstrate Lenz's Law", TPT, Vol. 40, #4, Apr. 2002, p. 249.
  • Don Kangas and Haym Kruglak, "Lenz's Law Demonstration", TPT, Vol. 27, #1, Jan. 1989, p. 50.
  • Thomas D. Miner, "Lenz's Law Demonstration", TPT, Vol. 6, #8, Nov. 1968, p. 427.
  • Robert Ehrlich, "N.3. Pumping a Hanging Coil With a Magnet", Turning the World Inside Out and 174 Other Simple Physics Demonstrations, p. 165 - 166.






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