PHY 121 Week 5

  Main Objectives:
Be able to discuss some of the problems associated with overpopulation
Be able to explain why an object with charge is attracted to a neutral object.
Be able to define electric current and electric potential difference.
Be able to discuss the basic structure of an atom
Know the relationship between electric current, electric resistance, and electric potential difference (Ohm's law)
Be able to calculate the power associated with electric appliances
Be able to calculate how much it costs to run an applicance given its power and the cost of electric energy
Monday We will discuss the answers to the essay exam questions, then continue with our discussion of Ch. 3

Outside of class:  Go over the questions you missed on the exam. Think about why you missed them.  Look for patterns in your mistakes that might help you do better on the next exam.  Read the study skills handout.  Read Ch. 4 Sections 1-3.
Wednesday Discuss electric charge, electric forces, and atomic structure.

Outside of class: Read Ch. 4 Sections 4-7.  Start going over the chapter 4 review questions. 

Friday Discuss the basic ideas of electric circuits.

Outside of class: Read Ch. 4 Sections 8-12.   Do Ch. 4 questions 10, 15, 17, 21, 22, and 28.