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ERIC Number: EJ1007709
Record Type: Journal
Publication Date: 2013-Mar
Pages: 3
Abstractor: As Provided
Reference Count: 6
ISSN: ISSN-0031-921X
F = qv x B:v Is with Respect to What?
Scheller, Kent W.; Pickett, Thomas J.
Physics Teacher, v51 n3 p169-171 Mar 2013
In introductory physics classes, we typically introduce the magnetic force, F = qv x B, on a moving charge and its vector nature using a right-hand rule, as described by numerous textbooks. When presented to students, it is often assumed that the velocity of the charge used in this calculation is relative to the magnetic field in which it travels. Previously the relativity of the magnetic force has been discussed to show that v is not with respect to the magnetic field. Here we demonstrate with a couple of Gedanken experiments the actual relativity of the magnetic force and to what the charge's velocity is relative. (Contains 5 figures.)
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