9-Electrostatics

Slideshows: Electrostatics Slideshow

Textbook: Chapters 14 in Mastering Physics (get online code for registration on about page of google classroom)

Objectives:

  • Nature of charge
    • Explain experimental evidence that there are 2 types of charge.
    • Challenge the claim that an electric charge smaller than the elementary charge has been isolated
  • Conservation of charge
    • Make claims explaining object interactions where charge is conserved
    • Make predictions about the sign and relative quantity of objects after being charged.
    • Define and discuss open and closed systems to explain when charge is or is not conserved in a system.
  • Coulomb's Law
    • make qualitative and quantitative predictions about the interaction between 2 electric point charges.
    • Connect the concepts of gravitational force and electric force to compare similarities and differences

Equations:

In addition to the equation you may need to use the following constants and prefixes.

The concept of conservation of charge means you sometimes need to write your own equations to determine the charge on objects after they interact.

Common Misconceptions: (these statements all have errors)

    • Coulomb's law applies to charge systems consisting of something other than point charges.
    • The electric force is the same as the gravitational force.
    • Forces at a point exist without a charge there.
    • A charged body has only one type of charge.