Lec-4 - Previous Lecture Gausss Law E dA = S Qencl 0...

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Previous Lecture Gauss’s Law I S E · dA = Q encl ± 0 Lecture 4 – p.

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Announcement If you did not fill out a card Tuesday indicating your seat and the lecture you attend, you should do so today. – p.
Today Differences between conductors and insulators More examples of Gauss’s Law Electric potential and potential difference – p.

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Conductors and insulators are not the same. When you put charge on them, they behave behave differently. Charges stay where you put them on an insulator. Charges placed on a conductor move around until they find an equilibrium (steady-state) position. – p.
Fields and Charges near Conductors In a steady state situation, the charges on a conductor satisfy the following conditions E =0 inside the conductor. all charges are on the surface(s) E is to surface at the surface. – p.

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Two Ways to Use Gauss’ Law I S E · d A = Q encl ± 0 Given Q encl , find E (find the field of an infinite line of charge) Given E , find Q encl (find charges on a conductor) – p.
Conductor with empty internal cavity and total charge q C : all charge on outer surface. – p.

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Lec-4 - Previous Lecture Gausss Law E dA = S Qencl 0...

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