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🟢 8: W 4/15 - series & parallel circuits
🟢 8: W 4/15 - 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".
Presentation: Series & 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. Unit Assessment on Potential Energy, Potential, and Circuits on Wednesday, April 22nd (4th marking period).
🟩❗8: Th 4/16 - combination circuits
🟩❗8: Th 4/16 - combination circuits
Today, we'll spend time learning about combination circuits (aka combo circuits) which combine elements of series and parallel circuits into one more complex circuit. We'll learn how to "solve" these circuits to find the voltage drops, currents, and power for each resistor.
First 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 power. For another detailed example, look in your textbook at Example 23.9 on pages 813-814. (See Mastering Physics for online textbook.)
The output of your learning is ➕ Positive Physics unit 23: circuit analysis, "challenge 2" work problems only (just 4 problems) due tomorrow at 10pm. You should just be able to login to ➕ Positive Physics with Google.
Homework: ➕ Positive Physics is due on Thursday, April 16th at 10pm. Only completion score counts, so try the problems till you get them right. No late work will be accepted!!! It is best to try to finish these well before they are due because there will be no excuse for late work. Unit Assessment on Potential Energy, Potential, and Circuits on Wednesday, April 22nd (4th marking period).
Optional Extra Practice: 📖Mastering Physics "Ch 23 - series & parallel circuits" problems: #5, 10, 11, 12, 15, (17), 18, 23, 56, 58.
💚 8: F 4/17 - circuits problem solving
💚 8: F 4/17 - circuits problem solving
Last day of 3rd Marking Period.
Today, we'll spend the whole period on problem solving for this unit. You'll do problems with series, parallel, and combination circuits.
Homework: Unit Assessment on Potential Energy, Potential, and Circuits on Wednesday, April 22nd (4th marking period). Finish the problem solving above.
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