# AT Cycle 19*

## 1/4 - 1/7

T 1/4

W 1/5

Th 1/6

F 1/7

### π΄ 1: T 1/4 - electric potential path integral

Daily Check-in: Finding potential with path integral

After the daily check-in, we'll continue working on electrostatics problems to review finding both electric field and potential.

Required: 1979E1, 2000E2, 1994E1, 1993E1, 1989E1, 1980E2
Enrichment: Find old AP problems in the resources I provided in Google Classroom. There is at least one electrostatics problem from every year of past AP problems.

Homework: QUIZ on Electric Potential with both integral and path integral (no equipotential lines) Thursday, January 6th. Check out the Circuits Review Videos in preparation for the next unit which we will start the second week of January.

### π‘π¨ 3: T 1/4 lab - electric potential path integral & equipotential lines lab (1)

Today, we'll continue doing problems to review finding both electric field and potential.

Required: 1979E1, 2000E2, 1994E1, 1993E1, 1989E1, 1980E2
Enrichment: Find old AP problems in the resources I provided in Google Classroom. There is at least one electrostatics problem from every year of past AP problems.

Then, during the second hour, we'll learn how to draw equipotential lines with a lab that utilizes the PhET simulation Charges & Fields. Read the instructions for the equipotential lines lab, and complete the questions in the βοΈ Google Classroom assignment, which will require you to screenshot your work, posting it on a Jamboard, and then drawing electric field lines overtop.

Homework: POSTPONED!!! QUIZ on Electric Potential with both integral and path integral (no equipotential lines) next class - Thursday, January 6th. Check out the Circuits Review Videos in preparation for the next unit which we will start the second week of January.

### π₯ 1: W 1/5 virtual - electric potential problem solving

Today, we'll continue working through these problems on electric potential:

Required: 1979E1, 2000E2, 1994E1, 1993E1, 1989E1, 1980E2
Enrichment: Find old AP problems in the resources I provided in Google Classroom. There is at least one electrostatics problem from every year of past AP problems.

Homework: POSTPONED!!! QUIZ on Electric Potential with both integral and path integral (no equipotential lines) Thursday, January 6th. Check out the Circuits Review Videos in preparation for the next unit which we will start the second week of January.

Re-quiz on Gauss's Law on Monday if we're still hybrid or Tuesday if we're back to full in person. Quiz on Electric Potential Energy & Potential Wednesday if we're still hybrid or Thursday if we're back to full in person.

### π 3: Th 1/6 - equipotential lines lab (2)

POSTPONED!!! QUIZ on Electric Potential with both integral and path integral (no equipotential lines) TODAY!

We'll start class by looking at your last two quizzes. Quizzes on Gauss's Law and electric potential next week!

Today, we'll continue our lab on how to draw equipotential lines. Read the instructions for the equipotential lines lab, and complete the questions in the βοΈ Google Classroom assignment, which will require you to screenshot your work, posting it on a Jamboard, and then drawing electric field lines overtop.

Homework: The equipotential lab is due Sunday at 10pm. Check out the Circuits Review Videos in preparation for the next unit which we will start the second week of January. THINK ABOUT THIS: If you can calculate V by integrating E, can't you find E by taking the derivative of V? Kind of, but the problem is that E is a vector, so how do we get a vector from a scalar? First, for a conceptual explanation, check out the video below. Then, read section 24-6 on page 701-702 in your textbook, and work through Sample Problem 24.05. For some good practice, you may want to derive the expression for the electric potential at any point on the central axis of a uniformly charged disk. Additionally, make sure to think about why Ex and Ey are zero. Using the gradient method E=-βV is a cool different way of finding the electric field. In a lot of ways it's easier than the electric field integral, since you don't have to ever deal with component geometry. Check it out!

### β€οΈπ 1: Th 1/6 lab - equipotential lines lab

POSTPONED!!! QUIZ on Electric Potential with both integral and path integral (no equipotential lines) TODAY!

We'll start class by looking at your last two quizzes. Quizzes on Gauss's Law and electric potential next week!

Today, we'll learn how to draw equipotential lines with a lab that utilizes the PhET simulation Charges & Fields. Read the instructions for the equipotential lines lab, and complete the questions in the βοΈ Google Classroom assignment, which will require you to screenshot your work, posting it on a Jamboard, and then drawing electric field lines overtop.

Homework: Re-quiz on Gauss's Law on Monday. Quiz on Electric Potential Energy & Potential Wednesday.

The equipotential lab is due Sunday at 10pm. Check out the Circuits Review Videos in preparation for the next unit which we will start the second week of January. Electrostatics Assessment Tuesday, January 11th! THINK ABOUT THIS: If you can calculate V by integrating E, can't you find E by taking the derivative of V? Kind of, but the problem is that E is a vector, so how do we get a vector from a scalar? First, for a conceptual explanation, check out the video below. Then, read section 24-6 on page 701-702 in your textbook, and work through Sample Problem 24.05. For some good practice, you may want to derive the expression for the electric potential at any point on the central axis of a uniformly charged disk. Additionally, make sure to think about why Ex and Ey are zero. Using the gradient method E=-βV is a cool different way of finding the electric field. In a lot of ways it's easier than the electric field integral, since you don't have to ever deal with component geometry. Check it out!

### π 3: F 1/7 virtual

βοΈβοΈβοΈββοΈ SNOW DAY βοΈβοΈβοΈββοΈ

Homework: The equipotential lab is due Sunday at 10pm. Check out the Circuits Review Videos in preparation for the next unit which we will start the second week of January. Electrostatics Assessment next class - Tuesday, January 11th!

Re-quiz on Gauss's Law on Monday. Quiz on Electric Potential Energy & Potential Wednesday.