A study of concept understanding was carried out on Electrical Engineering students about the concept of electricity. This research was conducted to obtain an overview of the level of understanding of the basic concepts of electrical material in Electrical Engineering students at STTR Cepu. To identify the level of understanding of student concepts or student misconceptions on electrical material, multiple choice instruments using the CRI (Certain of Response Index) method are used. The CRI method can also be used to identify students who experience misconceptions, students who understand concepts, and students who do not understand concepts. Based on the research data there are five questions from the basic concept of electricity that students have low conceptual understanding or misconceptions. The results showed that students with a low understanding of the concept of as much as 70% in the concept of electric current, voltage in the circuit, variable resistance, kirchoff law and electric power.
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