Misconception Analysis to Know the Understanding of Static Electrical Concept at SMK Bina Taruna Gorontalo by Using Certainty of Response Index (CRI)

Analysis of the misconceptions on static electrical concepts has been conducted. The misconceptions are found in several indicators, such as in the concept of Atom, the concept of electrically charged concept, the concept of how to create electrically charged objects by rubbing, induction and conduction, electric charge properties, Coulomb Law and electric field. This research aims to determine the misconception of static electrical concept at SMK Bina Taruna Gorontalo. Analysis of these misconceptions by using objective questions that amounted to 20 items. sampling techniques in the analysis used only one class with a total of 22 students. Analysis of these misconceptions by using objective questions amounting to 20 items. The problem given to learners comes with the Certainty of Response Index (CRI) field to easily find out the level of misconceptions. in addition to CRI, researchers also used tree tier tests to determine the level of misconceptions. The results of the analysis came to the conclusion that some learners have misconceptions on each of the concept indicators. The indicator on the atomic concept of 54.5% which is subjected to misconception, electrically charged objects there are 63.6% who are experiencing misconceptions, the concept of how to create electrically charged objects by rubbing there are 54.5% who are experiencing misconceptions, induction there is a 54.5% which is subjected to a misconception and a conduction is 63.6%. The nature of the electric charge is 45.45% of the misconceptions, the Coulomb's law is 22.72% of the misconceptions and electric fields there are 18.18% of the misconceptions.