Electric Charge & Static Electricity
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Transcript of Electric Charge & Static Electricity
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Electric Charge &
Static ElectricityElectricity & Magnetism Chapter 2.1
Pages 46-53
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Electric Charge
• All objects are made up of atoms
• Atoms consist of 3 parts1. Protons2. Electrons3. Neutrons
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Electric Charge
• Ben Franklin described each part of the atom as having an electric charge
• Protons have a positive charge (+)
• Electrons have a negative charge (-)
• Neutrons have a neutral charge (neither + nor - )
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Repel & Attract
• Charges that are the same repel one another or push each other away
• Charges that are opposite attract one another or pull each other together– The same rules apply to magnets
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Electric Fields
• The force of electric charges can be felt for a distance
• An Electric Field is the area of force surrounding a charge
• Charged particles placed in an electric field will either repel or attract.
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Electric Fields
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Static Electricity
• Objects become charged by gaining or losing electrons– Protons are bound to the atom tightly
• Static Electricity is when charges build up on an object– Static means fixed or unmoving– Static charges do not flow
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What to Work On
• Section 2.1 Review Questions• Page 53, Questions 1-4 and 6
DUE: Friday, 3/16
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1 •Proton
2 •Electron
3 •Positive / Negative
4 •NeutronAtoms are made of 3 parts. Which
of these is NOT one of them?
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1 •Proton, Neutron, Electron
2 •Electron, Proton, Neutron
3 •Neutron, Electron, Proton
4 •Electron, Neutron, ProtonPut the following parts in the correct
order: Negative, Neutral, Positive.
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1 •Particles with the same charge repel
2 •Particles with the same charge attract
3 •Particles with opposite charges repel
Which of these statements is TRUE?
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Transferring Charge
• Charges can be moved from one object to another in 3 different ways:
1. Friction moves electrons by rubbing two objects together
2. Conduction transfers electrons from a charged object through touch
3. Induction is when electrons move from an object because of electric fields.
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Static Discharge
• When a negatively charged object and a positively charged object are brought together, electrons move until both have the same charge
• Static Discharge: Two charged objects will create a balanced charge.