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ERIC Number: EJ859377
Record Type: Journal
Publication Date: 2009-Oct
Pages: 3
Abstractor: As Provided
ISSN: ISSN-0031-921X
Motional Mechanisms of Homopolar Motors & Rollers
Wong, H. K.
Physics Teacher, v47 n7 p463-465 Oct 2009
The strong Nd[subscript 2]Fe[subscript 14]B permanent magnet has facilitated development of various fascinating yet simple homopolar motors. However, the physics of these devices is often not explained, or is explained incorrectly. A major concern is that Newton's third law was overlooked in some of the earlier articles. In this paper, I will employ this law in explaining the motional mechanisms of these devices.
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A