# HP Cycle 34

## 4/5 - 4/11

F 4/5

M 4/8 ☀️🌒

T 4/9

Th 4/11

### 🟢 5: F 4/5 - Ohm's Law & power

Today, recalling the outcome of the lab, we'll review the proportionality relationship between voltage, current, and resistance, which we call Ohm's Law.  To confirm your results, watch the following three short videos:

Then complete the "Electric Current, Ohm's Law, & Power WSs".  There is information in this packet about what you should have gained from the lab in addition to information about how to calculate the power output of a circuit element, as a review of the videos above.

PresentationOhm's Law, Light Bulbs, and Power

Homework Electric Current, Ohm's Law, & Power WSs due next class.

### 🟩 5: M 4/8 ☀️🌒 - series & parallel circuits

Today, we will start to look at more complex circuits - where circuit elements such as light bulbs are connected in series and parallel. We will learn to qualitatively analyze the effects on the brightness of the bulbs. We will try to determine what is happening in the circuit using our knowledge of voltage, current, and resistance. We'll practice schematic diagramming of circuits.

First, watch the video "Series and Parallel Circuits."

Then, complete "Series and Parallel (PH)" and "Simple Circuits CompuSheets".

PresentationSeries & Parallel Circuits (slides 9-24)

Printable"Series and Parallel (PH)" and "Simple Circuits CompuSheets"

Homework:   "Series and Parallel (PH)" and "Simple Circuits CompuSheets" due next class.   Circuits Quiz on Monday, April 15th.

### 💚 5: Th 4/11 - series and parallel circuits problems

Today, practice series and parallel circuits problem by working on 📖 Mastering Physics "Ch 23 - series & parallel circuits" problems:  #5, 10, 11, 12, 15, (17), 18, 23, 56, 58.  Make sure you hand in "Series and Parallel (PH)" and "Simple Circuits CompuSheets" due today in class.

Homework📖 Mastering Physics due Sunday, April 14th at 10pm.  Email me with questions.  Circuits Quiz on Monday, April 15th.

Optional Extension ActivityFirst watch "Circuit Analysis: Crash Course Physics #30." The key to solving combination circuits is to *REDRAW THE CIRCUIT EVERY TIME YOU COMBINE RESISTORS* that are simply in series or simply in parallel. See my solution to the "Crash Course Circuit Analysis SOLUTION" where I re-draw every step combining resistors in series or parallel, and then I work my way backwards to find currents, voltage drops, and powerFor another detailed example, look in your textbook at Example 23.9 on pages 813-814.

Then, complete the 📖 Mastering Physics "Ch 23 - combo circuits" problems: #19, 20, 25, 27, 28, 29, 31, 63, 64, 72.  This is completely optional, but recommended if you are taking AT Physics next year.