Physics electrical chap 18 - PHY2049PhysicsII...

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PHY 2049 - Physics II Electric Fields Valmín J. Miranda Polytechnic University Puerto Rico Orlando Campus
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18.1: The Origin of Electricity Atoms consist of protons, neutrons and  electrons. Mass of electron,  m e  = 9.11 x 10 -31  kg Magnitude of electric charge,  e e  = 1.60 x 10 -19  C can be positive (proton) or negative  (electron).
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18.1: The Origin of Electricity Atoms are normally found to be  electrically neutral . Electric charge is said to be  quantized  ( q  =  Ne ).
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18.2: Charged Objects and  the Electric Force Electric charge is transferred from one  object to another (electricity). Electrons are transferred: Body that gains them has an excess of  negative charge. Body that loses them has an excess of  positive charge. The net charge of the system is zero.
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18.2: Charged Objects and  the Electric Force Law of Conservation of Electric  Charge: During any process, the net electric charge  of an isolated system remains constant (is  conserved). Like charges repel and unlike  charges attract each other.
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18.3: Conductors and  Insulators Electric charge conductivity is similar to  thermal conductivity. There are  electrical conductors  and  electrical insulators . In many cases, an electrical conductor is also 
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This note was uploaded on 07/20/2011 for the course ELECTRICAL 3800 taught by Professor Lenardomorales during the Spring '11 term at InterAmerican Recinto Metropolitano.

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Physics electrical chap 18 - PHY2049PhysicsII...

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