PHYS 1112 - Introductory Physics II
Lesson 5 - Electric Current and Resistance

Study Assignment:

Study: Chapter 21, Sections 21.1 - 21.2

Lesson notes:

During this lesson, we will introduce, among other topics, current and resistance.

Objectives:

1. Know the definition of electric current.

2. Have a qualitative understanding of the theory of electrical conduction in metals.

3. Know the definition of resistance, and the relationship between this definition and Ohm's law.

4. Be able to apply Ohm's law to problems.

Vocabulary:

charge carrier
drift velocity
conduction electrons
electron gas
ohmic and nonohmic materials

Homework:

TQ: 21-10

TP: 21- 2 

Want to practice more? Try this

Additional reference (humor):

Dave Barry gives a humorous explanation of what electricity is (please don't use any of his explanations on exams or quizzes).

Last update: February 06, 2006