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| unlike charges attract each other. ''' | | unlike charges attract each other. ''' |
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| This attraction or repulsion is a result of forces | | This attraction or repulsion is a result of forces |
| that these charges exert on each other. This force, operating | | that these charges exert on each other. This force, operating |
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− | [[File:Electromagnetism_%20Resource_Material_Subject_Teacher_Forum_September_2011_html_m1ba34f6e.png]] | + | [[File:Atom Structure1.png]] |
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− | Electrons | + | Electrons are the smallest and lightest of the particles in an atom. Electrons |
− | are the smallest and lightest of the particles in an atom. Electrons | |
| are in constant motion as they circle around the nucleus of that | | are in constant motion as they circle around the nucleus of that |
| atom. Electrons are said to have a negative charge, which means that | | atom. Electrons are said to have a negative charge, which means that |
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− | [[File:Electromagnetism_%20Resource_Material_Subject_Teacher_Forum_September_2011_html_7fb72f41.png]]Protons | + | [[File:Atom Structure2.png]] |
− | are much larger and heavier than electrons. Protons have a positive | + | Protons are much larger and heavier than electrons. Protons have a positive |
| electrical charge. This positively charged electrostatic field is | | electrical charge. This positively charged electrostatic field is |
| exactly the same strength as the electrostatic field in an electron, | | exactly the same strength as the electrostatic field in an electron, |
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− | [[File:Electromagnetism_%20Resource_Material_Subject_Teacher_Forum_September_2011_html_51ef531a.png]]The | + | [[File:Atom Structure3.png]] |
− | electrostatic force exerted by the positive nucleus on the negatively | + | The electrostatic force exerted by the positive nucleus on the negatively |
| charged electrons is what keeps the electrons as a part of the atom. | | charged electrons is what keeps the electrons as a part of the atom. |
| Otherwise, the force that the electron will develop when it is moving | | Otherwise, the force that the electron will develop when it is moving |
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− | [[File:Electromagnetism_%20Resource_Material_Subject_Teacher_Forum_September_2011_html_f783dcf.png]]When | + | [[File:Induction_Charging.png]] |
− | an electrically charged object is brought near an uncharged object | + | When an electrically charged object is brought near an uncharged object |
| (the object must be a conductor), a distribution of charge happens in | | (the object must be a conductor), a distribution of charge happens in |
| the uncharged object. The end of the uncharged object which is | | the uncharged object. The end of the uncharged object which is |
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− | [[File:Electromagnetism_%20Resource_Material_Subject_Teacher_Forum_September_2011_html_m2d4a26f1.gif]] | + | [[File:Coulombslaw.gif]] |
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| # [[Science Object - Electricity]] This isa very good interactive session on electrostatics and current electricity. You can register at [[www.nsta.org]] for free and view all these science objects and many free materials in your online library. | | # [[Science Object - Electricity]] This isa very good interactive session on electrostatics and current electricity. You can register at [[www.nsta.org]] for free and view all these science objects and many free materials in your online library. |
| # [[How lightning strikes]] This page describes how lightning strikes and how lightning conductors work. | | # [[How lightning strikes]] This page describes how lightning strikes and how lightning conductors work. |
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| = Electric Field = | | = Electric Field = |
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