J

Gauss Law

Notes

8.6 Daily Video 1

  • Gaussian Surface

    • three-dimensional, closed surface

    • denoted by the circle on the integral symbol

  • Common symmetries (for charge distribution)

    • spheres and point charges

    • cylinders + lines of charge

    • uniform shapes + flat planes

  • Gaussian surfaces are typically constructed such that the electric field generated by the enclosed surface is either perpendicular or parallel to different regions of the Gaussian surface → simplified surface integral

  • Remember surface area of a sphere

8.6 Daily Video 2 (Planar Symmetric example)

  • Edge effects → think of people raising their arms up in a room

  • Edge effects will NOT appear on AP test (zooming into a small portion or assuming the plane is infinite)

    Conducting Plate

Problems to know how to do

  • infinite line of charge

  • infinite surface