Mood Brightener: ...more from Stay Homas. (Confination XIV)

Kirchoff's Laws:

(See the previous breadcrumbs for details)

Applications Continued:

Parallel only with multiple resistors:

Resistors in Parallel:

If we examine this problem carefully we can see that the same total current will flow from the battery if the set of resistors in parallel is replaced by a single 1.6 kΩ resistor. This leads to a simple expression for the equivalent resistance of any group of resistors in parallel shown in this slide from NASA. In the longer term you will learn a closed form expression for two resistors in parallel.

Series and Parallel:

Assignment Breadcrumb Reading: Bb Test

Resistors in Parallel:

Derive the algebraic result for the equivalent resistance of any two resistors in parallel. Note that it says the equivalent resistance is always less than the smallest of the two resistors.

Before Next Class:

Assignment HW: Bb Assignment

Circuit Analysis I:

Determine the current flowing in each resistor and the power generated by each battery.

Assignment HW: Bb Assignment

Circuit Analysis II:

Determine the current flowing in each resistor and the power generated by each battery.

Looking Ahead:

Look ahead to the next Breadcrumb: Magnets

Assignment Breadcrumb Reading: Bb Test

Earth's Poles:

What magnetic pole (N or S) is near the surface of the earth in Antartica (that's the South end of the planet!)? Why?