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arXiv 1602.04872physics.ed-ph
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学生对电路方程的理解困难

Students' Difficulties with Equations involving Circuit Elements

Jing Li, Chandralekha Singh

摘要:

我们讨论了一项调查,探讨学生的困难与方程涉及电阻,电容和电感。我们发现,入门物理学生有很大的困难理解,例如,欧姆电阻器的电阻如何用它两端的电势差和通过它的电流来表示,但当电阻器两端的电势差变化时,它不会变化。在电容器和电感器的问题上也出现了类似的混乱。我们讨论了这些困难与方程的背景下,介绍物理学生的表现,无论是在自由响应和多项选择格式的电路元件的问题。

英文摘要:

We discuss an investigation exploring students' difficulties with equations involving resistance, capacitance and inductance. We find that introductory physics students have great difficulty understanding, e.g., how the resistance of an ohmic resistor can be written in terms of the potential difference across it and the current through it, but it does not change when the potential difference across the resistor is varied. Similar confusions arose in problems relating to capacitors and inductors. We discuss these difficulties with equations in the context of introductory physics students' performance on questions about circuit elements both in the free-response and multiple-choice formats.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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