Ch. 21 - ElectricityCh. 21 -

ElectricityI. Electric ChargeI. Electric Charge

Atoms and ChargeConductorsInsulatorsStatic ElectricityElectric Discharge

A. Atoms and ChargeA. Atoms and Charge

Atoms All matter is made of small particles

called atomsProton

Electron

Neutron

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A. Atoms and ChargeA. Atoms and Charge

Electric Force force between charged objects

Electric Field the region around the charged particle that

can exert a force on another charged particle

Law of Electric Charge opposite charges attract like charges repel

A. Atoms and ChargeA. Atoms and ChargeFriction

Rubbing two objects together can cause electrons to be transferred from one object to the other

Conduction 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

B. ConductorsB. Conductors

Conductor material that allows electrons to move

through it easily electrons are loosely held ex: metals like copper and silver

C. InsulatorsC. Insulators

Insulator material that doesn’t allow electrons to

move through it easily electrons are tightly held ex: plastic, wood, rubber, glass

D. Static ElectricityD. Static Electricity

Static Electricity the net accumulation of electric

charges on an object

E. Electric DischargeE. Electric Discharge

The loss of static electricity as charges move off an object