PHYS 105 1nd Edition Lecture 32Outline of Last Lecture I. Formant TuningOutline of Current Lecture II. Coulomb’s LawIII. Electric CurrentIV. Ohm’s LawCurrent LectureI. Coulomb’s Law- Charge is intrinsic property of some elementary particles, such as electrons and protons- Neutrons carry no charge - Electron carries negative charge –e - Proton carries +e o e= 1.602x10^-19- Coulomb is the fundamental unit of charge - Charges of the same sign repel- Charges of the opposite sign attract II. Electric Current- A free charge can move from high potential location to a low potential location- The rate of the charge move per unit time is called electric current - Ampere= 1 coulomb/ 1 second III. Ohm’s Law- V = IxR- Electric potential represents a potential energy for electric charge to move from high potential to low potential- V is measured in volts - I (current) measured in Amperes- Proportional constant R is measured in Ohms - Batteryo A battery is a source of the electromagnetic motive force o It maintains a constant potential until charge is depleted These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a
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