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ch 17 PS HRW
ch 17 PS HRW
16
Physics
8th Grade
04/03/2012

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