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Physics Core/AP 1 and 2

Chapter 16: 7-12 Assignment

Course Materials are always under revision! Weblecture content may change anytime prior to two weeks before scheduled chat session for content.

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Homework

Physics 16: 7-12 Electric Fields

Homework

Reading Preparation

Text Reading: Giancoli, Physics - Principles with Applications, Chapter 16: Sections 7 to 12

Study Points

Key Equations

  • The Electric Field and Electric Force: E   =   F q   and   F   =   q E  
  • Electric Flux: Φ E   =   E A   =   E   A   =   EA   cos   θ
  • Gauss's Law: closed   surface E Δ A   =   Q enclosed ϵ 0

Web Lecture

Read the following weblecture before chat: Electric Fields

Study Activity

Use the simulation below to explore how field lines vary as you introduce new charges and move them around. Turn on the grid so that you can precisely place charges. Use the sensors to display net field direction and force values at specific points. What happens when you

  • Place a +1 nC charge at the center of the display and add a +1 nC one space unit (5 small units) away? How does the field change if you double the distance?
  • Place a +1 nC charge at the center of the display and add a -1 nC one space unit (5 small units) away? How does the field change if you double the distance?
  • Place three charges in a row
    • all positive
    • all negative
    • with outside charges positive and central charge negative
    • with left and center charges positive and right side charge negative
  • Experiment with charges in a triangle formation.
  • Experiment with charges in a square formation.

Physics simulation Java Applets are the product of the PHET Interactive Simulations project at the University of Colorado, Boulder.

Chat Preparation Activities

Chapter Quiz

Lab Work

If you want lab credit for this course, you must complete at least 12 labs (honors course) or 18 labs (AP students). One or more lab exercises are posted for each chapter as part of the homework assignment. We will be reviewing lab work at regular intervals, so do not get behind!