summary1

# summary1 - Summary Lecture Summary Lecture 1 The electric...

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Summary Lecture 1 Summary Lecture 1 The electric force is a field force All electric effects are caused by (electric) CHARGES (electric) Atomic View: El t d P t l Electrons and Protons carry an equal but opposite charge Elementary Charge: e = 1.6 x 10 -19 C (Coulomb) Charge of an Electron q e = - 1.6 x 10 -19 C

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Inductance Under the influence of an external electric force the charges in some Conductor (Metal): charge can move materials can separate. Conductor (Metal): freely Insulator: charge fixed A) neutral piece of metal +- -+ +- -+ -+ + -+ +- -+ +- -+ -+ +- + + + + + + + B) plus an external el. force ++ +++ - - - - - - - - - - - - - - - - - - ++ Negative Positive
Coulomb’s Law The force between two charges is The proportional to the product of the charges and inversely proportional to the square of the distance to the . Q 1 Q 2 F = k r 2 k = 9.0 x 10

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