Literaturnachweis - Detailanzeige
Autor/inn/en | Smith, David P.; Van Kampen, Paul |
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Titel | A qualitative approach to teaching capacitive circuits. |
Quelle | In: American journal of physics, 81 (2013) 5, S. 389-396
PDF als Volltext |
Sprache | englisch |
Dokumenttyp | online; gedruckt; Zeitschriftenaufsatz |
ISSN | 0002-9505; 1943-2909 |
DOI | 10.1119/1.4795589 |
Schlagwörter | Qualitative Analyse; Lehr-Lern-Forschung; Elektrizitätslehre; Physik; Physikunterricht; Stromkreis; Widerstand (Pol); Kapazität |
Abstract | We have investigated students' qualitative understanding of dc circuits containing resistors and a capacitor. We found that a year after traditional lecture instruction as part of an introductory physics course, most students were unable to predict the behavior of a series circuit consisting of a battery, a bulb, and a capacitor. Among the difficulties identified we found that almost half of the students implicitly abandoned the idea that a complete circuit is necessary for a bulb to light when a capacitor is introduced into the circuit. We have developed curriculum that enables students to construct a phenomenological model in which they liken the behavior of a capacitor to that of a wire, a switch, and a battery; this allows them to qualitatively describe circuits with batteries, bulbs, and capacitors. We have also developed curriculum on the determination of RC times. Post-test results show a significant increase in understanding of capacitive circuits. 2013 American Association of Physics Teachers. |
Erfasst von | Arbeitsgruppe Didaktik der Physik, Universität Osnabrück |
Update | 2014/1 |