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HONORS PHYSICAL SCIENCE OBJECTIVES Introduction to Electric Charge and DC Circuits Objectives: By the end of this unit, you should be able to do the following… Define electric charge and explain where it comes from Compare and contrast positive charge and negative charge Describe the behavior of a charge in the presence of other charges Compare and contrast the behavior of electrical conductors and electrical insulators based on their atomic structure Describe the following methods of charging an object: friction, contact/conduction Describe the separation of charges within neutral conductors to produce an induced charge Define electric force, including how the amount of electric force depends on charge and distance Describe an electric field Explain how field lines describe the electric field Define electric potential energy and explain how the amount of electric potential energy can change Define electric potential (voltage) and the SI unit used to measure it Describe how charges move and how their energy changes within a closed conducting path when that path contains a voltage source (battery) Define current and the SI unit used to measure it Describe the difference between direct current and alternating current Define resistance and the SI used to measure it Use Ohm’s Law to determine the current, voltage, or resistance for an electrical component Describe a closed electrical circuit and an open electrical circuit Describe a series electric circuit, including the voltage, current, and changes to both based on resistance Describe a parallel electric circuit, including the voltage, current, and changes to both based on resistance in the individual conducting paths Compare and contrast series and parallel circuits Describe the differences in the equivalent resistance of resistors connected in series and parallel.