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ERIC Number: EJ802496
Record Type: Journal
Publication Date: 2008-Jul
Pages: 7
Abstractor: As Provided
Reference Count: 5
ISBN: N/A
ISSN: ISSN-0031-9120
Helping Students Understand Real Capacitors: Measuring Efficiencies in a School Laboratory
Carvalho, Paulo Simeao; Sampaio e Sousa, Adriano
Physics Education, v43 n4 p400-406 Jul 2008
A recent reform in the Portuguese secondary school curriculum reintroduced the study of capacitors. Thus we decided to implement some experimental activities on this subject with our undergraduate students in physics education courses. A recent announcement of a new kind of capacitor being developed by a team of scientists at Massachusetts Institute of Technology (MIT), which makes use of nanotechnologies, was a great motivation for the study of a topic that could easily be considered "out of time". Since this new kind of capacitor is being seen as the battery of the future, our focus was essentially on efficiency measurements, motivating students to obtain, respectively, the time constant and the energies stored and supplied during the charge and discharge processes, from experimental graphics representing the power as a function of time in real capacitors. (Contains 5 figures and 1 footnote.)
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: info@ioppubusa.com; Web site: http://journals.iop.org
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Portugal