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Phys Sci - Chap 20

vocabulary words

QuestionAnswer
electric charge property that causes subatomic particles to attract or repel one another
electric force attraction or repulsion between electrically charged objects
electric field field in a region of space that exerts electric forces on charged particles; field produced by electric charges or by changing magnetic fields
static electricity the study of behavior of electric charges, including how charge is transferred between objects
law of conservation of charge law stating that the total electric charge in an isolated system is constant; electric charge is never created or destroyed
induction transfer of charge without contact between materials
electric current continuous flow of electric charge
direct current (DC) flow of electric charge in only one direction
alternating current (AC) a flow of electric charge that regularly reverses its direction
electrical conductor material through which electric charge can flow easily
electrical insulator material through which charge can't flow easily
resistance opposition to the flow of electric charges in a material
superconductor material that has almost zero resistance when it is cooled to low temperatures
potential difference voltage, or the difference in electrical potential energy between two places in an electrical field
voltage potential difference, the difference in electrical potential energy between two places in an electric field
battery device that converts chemical energy into electrical energy
Ohm's law relationship of voltage, current, and resistance; V=IR
electric circuit complete path through which electric charge can flow
series circuit electric circuit with only one path through which charge can flow
parallel circuit an electric circuit with two or more paths through which a charge can flow
electric power rate at which electrical energy is converted to another form of energy
fuse device that prevents overheating due to current overload in a circuit
circuit breaker switch that opens when the current in a circuit is too high
grounding transfer of excess charge through a conductor to Earth
electronics science of using electric currents to process or transmit information
electronic signal information sent as patterns in the controlled flow of electrons through a circuit
analog signal a smoothly varying signal produced by continuously changing the voltage or current in a circuit
digital signal signal that encodes information as a string of 1's and 0's
semiconductor crystalline solid that conducts electric current only under certain conditions
diode solid-state component with an n-type semiconductor joined to a p-type semiconductor
transistor solid-state component with three layers of semiconductor material, used to turn current on or off or to increase the strength of electronic signals
integrated circuit thin slice of silicon that contains many solid-state components; a microchip
computer programmable device that can store and process information
Created by: msparks