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Electricity unit 4

Science unit 4- electricity

QuestionAnswer
Law of Electric Charges Similar charges repel and opposite charges attract
Electric Force Force between charged objects(push or pull). Big charges=bigger force, close together=bigger force.
Conduction When electrons are transferred from one object to another by direct contact
Induction Charges in an uncharged object are rearranged without direct contact with a charged object
Conductor A material in which charges can move easily
Insulator A material in which charges cannot easily move
Static Electricity The buildup of electric charges on an object
Voltage The difference in energy between two points in an electric circuit
Resistance The opposition to the flow of electric charge; expressed in ohms
Electric Power The rate at which electrical energy is used to do work; expressed in watts (W)
Circuit A complete, closed path through which electric charges flow
Load A device that uses electrical energy to do work
Series Circuit A circuit in which all parts are connected in a single loop
Parallel Circuit A circuit in which different loads are on separate branches.
Electric Discharge The loss of static electricity as charges move off an object
Cell A device that produces an electric current by converting chemical energy into electrical energy
Battery A device that is made of several cells that produces an electric current by converting chemical energy into electrical energy
Potential Difference The difference in energy as charges move between two points in an electric circuit; same as voltage; expressed in volts (V)
Photocell The part of a solar panel that converts light into electrical energy
Thermocouple A device that converts thermal energy into electrical energy
Current A continuous flow of charge caused by the motion of electrons; the rate at which charge passes a given point; expressed in amperes (A)
Created by: red8
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