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Electric Fields

Electric Fields. 2006 P.1 Concept: Forces between charges are action-reaction pairs (N3L). Spring 2005 P.3. 2006 P.2 Concept: Superposition (Vector sum) of E-fields. 2006 P.3 Concept: E Fields from charge distributions. Electric Flux & Gauss’s Law. Non-uniform E. Uniform E.

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Electric Fields

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  1. Electric Fields

  2. 2006 P.1Concept: Forces between charges are action-reaction pairs (N3L)

  3. Spring 2005 P.3

  4. 2006 P.2Concept: Superposition (Vector sum) of E-fields

  5. 2006 P.3Concept: E Fields from charge distributions

  6. Electric Flux & Gauss’s Law Non-uniform E Uniform E

  7. 2006 P.5Category: Gauss’s Law & Electric FluxConcept: Net flux on Gaussian surface is generated by net enclosed charge

  8. 2005 P.5 Category: Gauss’s Law & Electric FluxConcept: Net flux on Gaussian surface is generated by net enclosed charge

  9. 2006 P.6 Category: Gauss’s Law & Electric FluxConcept: Definition of vector dot product EA E

  10. Electric potential of charge systems

  11. 2005 P.7Category: Electric PotentialsConcept: Superposition (not vectors!! Just add them up!!)

  12. 2005 P.8Category: Electric PotentialsConcept: Delta V is the line integral of E

  13. 2005 P.11Category: Electric PotentialsConcept: E is – dV/dx

  14. Capacitance

  15. 2006 P.10Concept: Physical Capacitor w/ dielectric

  16. 2005 P.12&13Concept: Series Caps= Same charge; Parallel Caps= Same Voltage

  17. Current & Circuits

  18. 2006 P.11Current & CircuitsConcept: Resistance of a conductor changes w/ temp.Strategy: Make a ratio

  19. 2005 P.17Current & CircuitsConcept: Current continuity and Ohm’s Law

  20. 2006 P.11Current & Circuits

  21. Magnetic Fields

  22. 2005 P.23 & 24Magnetic FieldsConcept: Net B is superposition (vector sum) of B from each current

  23. Induction & Inductance

  24. 2005 P.28Induction & InductanceConcept: Lenz’s Law- Induced current opposes the CHANGE in flux

  25. 2006 P.23Induction & InductanceConcept: Lenz’s Law- Induced current opposes the CHANGE in flux

  26. Maxwell’s EQ & EM Waves

  27. 2006 P.30Maxwell’s EQ & EM WavesConcept: Displacement current behaves like a current in a conductor and generates B-field

  28. 2005 P. 32 & 33EM WavesConcept: EM waves carry energy (@ speed c), transmit power and exert pressure

  29. Optics

  30. Optics

  31. 2006 P.35 & 36 Small angle approximation: Sin() ~ d/L

  32. 2006 P.35 & 36 Small angle approximation: Sin() ~ d/L

  33. 2006 P.36InterferenceConcept: Small angle approximation: Sin() ~ d/L

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