AT Cycle 21

🔴❗2: Th 1/22, 🟡❗4: Th 1/22a, 🔵❗7: Th 1/22 - RC circuits problems set 2

QUIZ on derivation of charging and discharging equations TODAY. 

After the quiz, we'll work on the following problems.  These are learning problems, so we will be learning and deepening our understanding of capacitors while we do problems.

    Required 2:  Ch 27 #61, 63, 65, 67, 79, 80, 2006E2, 1996E2, 2010E2
    Enrichment: Ch 27 #66, 69

Rather than focusing on how capacitors charge and discharge over time, we'll think about what happens immediately after the switch is closed and a long time after the switch is closed.  For additional support, watch the following 3 videos in the previous post.  Remember that an uncharged capacitor acts like a wire and a fully charged capacitor acts like an open circuit.  Then think about using Kirchhoff's Loop Rule to solve the rest.  

Also, after learning a little more, I would like for you to revisit the "Tricky Challenge" from the ✅ GoFormative "Capacitor Pre-Lab".  There's a new assignment in ✅ GoFormative called "Capacitor Pre-Lab Revisited" which is also due tonight at 10pm.

Homework:   ✅ GoFormative "Capacitor Pre-Lab Revisited" due tonight - Tuesday, January 28th at 10pm.  Short QUIZ on RC Circuits (above problems) on Wednesday, January 28th (last assessment of marking period 2).  Watch the video on Dielectrics in Capacitors below:

🟥 2: F 1/23a, 🟨 4: Th 1/22b, 🟦 7: F 1/23a - dielectrics

Here's a list of the things you should be able to do by now:

• Know how to derive the charging and discharging equations (and also know what they are without doing the derivation)

• Know how to get the time constant from a graph two different ways

• Know what happens at t=0+ and t=∞  when charging or discharging

• Derive the energy stored in capacitor equation

• Know how a dielectric changes electric field, capacitance, and energy stored

• Know the two different types of problems when inserting dielectrics

• Derive the “CAKEd” equation

Homework:  If you need to review dielectrics, you may review the video. 

❤️ 2: F 1/23b, 💛 4: M 1/26, 💙 7: F 1/23b - more practice AP Problems (1)

Today, if you have not completed the last set, start there:

    Required 2:  Ch 27 #61, 63, 65, 67, 79, 80, 2006E2, 1996E2, 2010E2

Then, we'll do some more practice AP Problems:  

    Required 3:  2002E2, 2003E2, 1986E2, 1988E2 (don't worry about part e), 1989E3

We'll have time to work on these problems again.

Homework:  Short QUIZ on RC Circuits on Wednesday, January 28th (last assessment of marking period 2).   Finish any of these required problems and do some additional practice.  Upload a PDF of your solutions to ✏️ Google Classroom by Sunday, February 4nd at 10pm.  

📕 2: M 1/26, 📒 4: T 1/27, 📘 7: T 1/27 -📄internal resistance lab

Handouts:  📄EMF & Internal Resistance Lab

Homework:  Short QUIZ on RC Circuits on Wednesday, January 28th (last assessment of marking period 2).   Finish the  📄EMF & Internal Resistance Lab due at the beginning of class on the day of the lab quiz.  LAB QUIZ on internal resistance Thursday, January 29th for periods 2 and 7, and Friday, January 30th for period 4 (first assessment of marking period 3).  Watch the following videos: