# AT Cycle 16

## 12/8 - 12/13

F 12/8

M 12/11

T 12/12

W 12/13

### 🔴 2: M 12/11a, 🟡 4: F 12/8, 🔵7: F 12/8 - continuous charge distribution (2)

Today, we'll continue to do problems which require us to calculate the electric field due to a continuous distribution of charge:

Required: Electric field integrals #2 only (WHERE you put theta matters in what the integral looks like, but the result should be the same if you've chosen the correct limits. Here's one solution, and here's another, and here's yet another), 1981E2, redo Giancoli Example 21-10 (p. 559), and state why the book chose to solve with dθ rather than dy. Also, Halliday Chapter 22 #28, 29, 32, 31

Enrichment: Halliday Chapter 22 #24, 33, 65

With the last half hour of class, we will start the next lab activity. We'll review what you should have learned about flux last year: last year, we talked about magnetic flux in the context of induction, and this year, we'll find out more about electric flux.

Homework: By next class (Monday), read this page on Electric Field Lines from The Physics Classroom. Make sure that you understand the rules for drawing electric field lines. If you don't remember anything about the concept of flux, watch the first 3:43 in my Faraday's Law video. Continuous distribution of charge problems are due in ✏️ Google Classroom on Monday, December 11th at 10pm.

### 🟥 2: M 12/11b, 🟨 4: M 12/11, 🟦 7: M 12/11a - flux

Today, we'll review electric field line by playing with an online applet (Falstad 2-D Electrostatic Fields) while starting on this worksheet: Flux Using Applet. We'll explore the concept of flux. We'll talk about what flux is in general, and we'll figure out how to represent electric flux. Then, we'll go back to the online applet which will help us to understand even more about flux. Watch this video for directions on using the applet.

Homework: QUIZ on Electric Field Integral (no Gauss's Law) Friday, December 15th. Continuous distribution of charge problems are due in ✏️ Google Classroom on Monday, December 11th at 10pm. Also, TONIGHT (Monday), before next class, finish the worksheet which was given out in class. Then, watch the following two videos on Gauss's Law:

### ❤️ 2: T 12/12, 💛 4: W 12/13a, 💙7: M 12/11b - Gauss's Law problems (1)

Today, we'll recap how to use Gauss's Law for a conducting sphere. We'll then talk about why the electric field inside a conductor is always zero (in an electrostatic case anyway) by looking at what happens when we put a piece of metal inside an electric field.

Then, if there's time, start problems from Chapter 23:

Required: 4, 7, 14, 20, 29, 32, 52

Homework: QUIZ on Electric Field Integral (no Gauss's Law) on Thursday, December 15th. Gauss's Law Problem Set 1 above is due to ✏️ Google Classroom on Wednesday, December 13th at 10pm.

### 📕 2: W 12/13, 📒 4: W 12/13b, 📘7: T 12/12 - Gauss's Law problems (2)

Today, we'll do problems from Chapter 23 on applying the concept of flux and Gauss's Law:

Required: 4, 7, 14, 20, 29, 32, 52

With time remaining, watch homework videos below.

Homework: QUIZ on Electric Field Integral (no Gauss's Law) on Thursday, December 15th. Gauss's Law Problem Set 1 above is due to ✏️ Google Classroom on Wednesday, December 13th at 10pm. Watch the following videos on finding the electric field inside a spherical insulator and finding the electric field around a sphere of non-uniform charge density: