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ERIC Number: EJ1025037
Record Type: Journal
Publication Date: 2013-Nov
Pages: 2
Abstractor: As Provided
Reference Count: 8
ISSN: ISSN-0031-921X
An Alternative Introduction to Maxwell's Displacement Current
Reich, Gary
Physics Teacher, v51 n8 p485-486 Nov 2013
In introductory texts Ampere's law is generally introduced in the steady-current form ?B · dl = µ[subscript 0]I, and it is later extended to a more general form involving the so-called displacement current I[subscript d], ?B · dl = µ[subscript 0](I + I[subscript d]) · (1). Here the line integral is to be taken along a closed "Amperian" loop, and "I" is the net conventional current that penetrates any surface bounded by the loop. In its steady-current form (without I[subscript d]), Ampere's law is used to find the magnetic field generated by highly symmetric arrangements of current-carrying wires, for example, an infinite straight line of current or an infinite solenoid, in analogy with Gauss's law.
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A