A dynamic demonstration of Lenz's law

Physics Teacher

Volumn 35, Issue 1, 1997, Pages 47-49

  Sawicki, Charles A ^a  

^a NORTH DAKOTA STATE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 85006319292     PISSN: 0031921X     EISSN: 19434928     Source Type: Journal    
DOI: 10.1119/1.2344590     Document Type: Article

References (10)

1. J. Priest and B. Wade, Phys Teach. 30, 106 (1992).
2. W.M. Saslow, Am. J. Phys. 60, 693 (1992).
3. Arbor Scientific, P.O. Box 2750, Ann Arbor, MI 48 106-2750; catalog #P8-1124. This neodymium-iron-boron magnet is 2.5 cm long, 2.2 cm in diameter, and polarized on the ends. This magnet is very powerful and should be handled with care to avoid pinching injuries.
4. Cellulose acetate tubing is cheaper and much less prone to fracture than either acrylic or polycarbonate tubing. Available from almost any supplier of plastics.
5. We machined copper-tube segments from a piece of scrap copper tubing (4.6 cm outside diameter, 2.5 cm inside diameter). Keep in mind that alloys (for example brass) have much higher resistivities and will not work in this demonstration.
6. PASCO scientific photogate (model #ME-9204A) attached to a PASCO 6500 interface (model #CI-6500).
7. The position of the infrared beam was determined with an infrared sensor card; Radio Shack catalog #276-1099).
8. P.A. Tipler, Physics for Scientists and Engineers, 3rd ed. (Worth Publishers, New York, 1991), p. 116.
9. C.A. Sawicki, Phys. Teach. 34, 38 (1996).
10. Handbook of Chemistry and Physics, 42nd ed. (CRC Press, Boca Raton, FL, 1960), pp. 2589-2590.