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ERIC Number: EJ890400
Record Type: Journal
Publication Date: 2010-Mar
Pages: 4
Abstractor: As Provided
Reference Count: 1
ISSN: ISSN-0031-9120
An Educational Kohlrausch Ammeter
Straulino, S.; Cartacci, A.
Physics Education, v45 n2 p158-161 Mar 2010
The Kohlrausch ammeter is based on the measurement of the force acting between a solenoid and a soft iron rod inserted inside it. In this article, we present a new version of the instrument for educational purposes: in our device the dynamometer, which is usually employed to measure the force, is replaced by an electronic balance. The operation of the instrument is satisfactory: the precision is better than 1%. Furthermore, the measurements can be useful to improve students' knowledge of magnetism and magnetic materials. (Contains 5 figures, 4 footnotes, and 1 table.)
Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; 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