PERC 2018 Abstract Detail Page
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Abstract Title: | Learning to Apply Coulomb's Law Consistently: It's Complicated |
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Abstract: | It is well known that students have difficulty with the superposition of electric forces and fields and there have been useful investigations into the nature of those difficulties. But what if a source of such difficulties lies in students' understanding and acceptance of the most basic relation about electric charge interactions? We report on an investigation to see how consistently students use Coulomb's law for a variety of tasks where the same two charges are put into situations with other items (additional charges and/or insulators or conductors) present. Students in the second semester of an algebra-based introductory physics course were post-tested with a set of ten tasks. We found two main contributors to the inability of students to apply Coulomb's law consistently: confusion between a single force and net force, and presence of additional items (charges or insulators/conductors) which students think alter the interaction of the two charges. |
Abstract Type: | Contributed Poster Presentation |
Session Time: | Poster Session II |
Poster Number: | B54 |
Author/Organizer Information | |
Primary Contact: |
David P. Maloney Purude University Fort Wayne 2101 East Coliseum Blvd Fort Wayne, IN 46805 Phone: 260-481-6292 |
Co-Author(s) and Co-Presenter(s) |
Samuel A. Cook, Purdue University Fort Wayne |