Some simple demonstration experiments involving homopolar motors

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5 Scopus citations


The ready availability of very strong permanent magnets in the form of rare-earth magnetic alloys such as neodymium-iron-boron has lead to renewed interest in one of the oldest types of electric motors - the homopolar motor. The ease with which a demonstration homopolar motor can now be built and operated when neodymium magnets are used is quite remarkable. In this paper some simple homopolar motors employing neodymium magnets suitable for demonstrational purposes are described and discussed. Copyright by the Sociedade Brasileira de Física.
Original languageEnglish (US)
Pages (from-to)275-281
Number of pages7
JournalRevista Brasileira de Ensino de Fisica
Issue number2
StatePublished - Jan 1 2007
Externally publishedYes

ASJC Scopus subject areas

  • Education
  • General Physics and Astronomy


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