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Chap 17

Chapter 17- Introduction to Electricity

QuestionAnswer
law of electric charges the law that states that like charges repel and opposite charges attract
electric force the force of attraction or repulsion on a charged particle that is due to an electric field
electric field the space around a charged object in which another charged object experiences an electric force
electrical conductor a material in which charges can move freely
electrical insulator a material in which charges CANNOT move freely
static electricity electric charge at rest; generallyproduced by friction or induction
electric discharge the release of electricity stored in a source
electric current the rate at which charges pass through a given point;measured in amperes
voltage the potential difference between two points; measured in volts
resistance in physical science, the opposition presented to the current by a material or device
cell in electricity, a device that producese an electric current by converting chemical or radiant energy into electrical energy
thermocouple a device that converts thermal energy into electrical energy
photocell a device that converts light energy into electrical energy
electric power the rate at which electrical energy is converted into other forms of energy
series circuit a circuit in which the parts are joined one after another such that the current in each part is the same.
parallel circuit a circuit in which the parts are joined in branches such that the potential difference across each part is the same
Created by: bobdog on 2010-04-14



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