OPENING QUESTIONS:

First, what are some of the most important formulas and concepts that you recall regarding Gaussian surfaces?

What are the key differences between a conducting sphere, and one that is an insulator? What are the key similarities?

Think back to electric flux: what does it signify, and what are all of the different permutations that can be used to find it?

OBJECTIVES:

• I will be able to describe the types of charge and the attraction and repulsion of charges.

• I will be able to calculate the charge of the surface of a given shape (sphere, cylinder, etc.), given the charge density

• I will be able to calculate the flux of an electric field through an arbitrary surface or of a field uniform in magnitude over a Gaussian surface and perpendicular to it.

• I will be able to describe qualitatively the patterns and variation with distance of the electric field of a uniformly-charged spherical shell.
  

WORDS FOR TODAY:

Electric Field: Surrounds an electric charge and exerts a force on surrounding charges

Electric Potential: The difference in potential energy per unit charge between two locations in an electric field

Electric Flux: Rate of flow of an electric field through a given area

FORMULAE:

• Ε₀ = 8.85 x 10^-12 C²/Nm²

• q(enc)=ρv

• Φ=EA

• Φ = q_in/ε_o

WORK O' THE DAY: