PHYS 1112 - Introductory Physics II
Lesson 6 - Resistance

Study Assignment:

Study: Chapter 21, Sections 21.2 - 21.3

Lesson notes:

During this lesson, we will continue our discussion of resistance and examine a model for the conduction of electricity in metals.

Objectives:

1. Understand that the resistance of an ohmic conductor is directly proportional to its length and inversely proportional to its cross-sectional area.

2. Understand that the resistivity of a conductor varies approximately linearly with temperature.

3. Be able to calculate the power supplied to a resistor and the power dissipated in a resistor.

Vocabulary:

temperature coefficient of resisitivity
critical temperature
superconductor
electromotive force
joule heating
I²R heating loss

Homework:

    TQ: 21-24

    TP: 21-12, 21-14, 21-15, 21-17, 21-19, 21-22 

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Last update: August 07, 2007