13 terms

chapter 17 electricity terms 7th grade

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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 discharge
the release of electricity stored in a source
Static electricity
electric charge at rest; generally produced by friction or induction
Cell
in biology, the smallest unit that can perform all life processes; cells are covered by a membrane and contain DNA and cytoplasm
Voltage
the potential difference between two points; measured in volts
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
Resistance
in physical science, the opposition presented to the current by a material
Electrical conductor
a material in which charges can move freely
Electrical insulator
a material in which charges cannot move freely
Electric current
the rate at which charges pass through a given point; measured in amperes
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