DAY 92

WARM-UP (4 minutes)

Copy and Complete:

There are two requirements that must be met in order to establish an electric circuit. The requirements are

There must be an energy supply capable doing work on charge to move it from a low energy location to a ____ _____ location and thus establish an electric potential _________ across the two ends of the external circuit.
There must be a closed conducting loop in the external circuit that stretches from the ____ potential, positive terminal to the low potential, ________ terminal.

CLASSWORK

092A: How Well do You Understand Circuits?

1. COPY EACH SENTENCE, THEN COMPLETE IT WITH THE CORRECT WORD CHOICE. If an electric circuit could be compared to a water circuit at a water park, then the ...

... battery would be analogous to the ____.

... positive terminal of the battery would be analogous to the ____.

... current would be analogous to the ____.

... charge would be analogous to the ____.

... electric potential difference would be analogous to the ____.

Choices:

A. water pressure

C. water

E. water pump

B. gallons of water flowing down slide per minute

D. bottom of the slide

F. top of the slide

2. DRAW EACH DIAGRAM. Utilize your understanding of the requirements of an electric circuit to state whether charge would flow through the following arrangements of cells, bulbs, wires and switches. If there is no charge flow, then explain why not. DRAW EACH DIAGRAM.

Charge Flow: Yes or No?

Explanation:

Charge Flow: Yes or No?

Explanation:

Charge Flow: Yes or No?

Explanation:

Charge Flow: Yes or No?

Explanation:

3. The diagram at the right shows a light bulb connected to a 12-V car battery. The + and - terminals are shown.

a. As a - charge moves through the battery from A to D, it ________ (gains, loses) potential energy and ________ (gains, loses) electric potential. b. As a - charge moves through the external circuit from D to A, it ________ (gains, loses) potential energy and ________ (gains, loses) electric potential.

091A & 92B: Advanced Circuits & Components

What's a switch? What's a resistor? Capacitor? Transistor?
You likely know some of these terms, but not all.
We'll spend our last four days of class using, and learning about, the major components of circuit.
Things you'll do:
- create real circuits that make lights flash, make sounds, etc.
- diagram circuits using symbols
- research circuit components, and describe their function
- discuss what you've learned
Assignment: Learn about circuits components, and how they work, by completing "Switch On!" mini-labs
Assessment: You'll create two documents, both of which will be multiple pages long:
- 1. Lab Summary Doc (3 columns) : Mini-Lab Title; Circuit Diagram (AKA schematic); Concepts Illustrated in Lab
- 2. Circuit Components (4 columns): Component Name; Symbol; Function (what it does); How Does It Work?
Groups: 3-5 students per kit, depending on class size

HOMEWORK:

Video LINK

Questions:

Define the term "Resistance" (here's a photo of a resistor: http://usbflashrecovery.com/flash-drive-whats-inside/)
Write the equation for resistance, label each of the variables, and list the symbol (unit) for resistance
Copy the graph of V vs I for an ohmic material
Oop! Mr. P said that one of the equations you already wrote is called Ohm's Law. Put that title next to the appropriate equation.
Copy the graph of V vs I for a non-ohmic material
The non-ohmic graph is non-linear. Think about what that means... What happens to the current as the voltage increases?
Draw the diagram of the battery/lamp circuit, and the graph which goes along with it.
As PEele passes through the lamp, it gets converted into....what?
Watt (get it?) equation do we already know for power?
Copy & follow along as Mr. P derives the three equations for electric power. You may need to watch this section a few times to really get the connection between the equations.
Finally, the dimensions of power are....?

Extra Credit:

1. Complete #31-48 correctly LINK. Draw the diagrams, and use a different color pen or pencil to show the flow of current throughout the ENTIRE CIRCUIT. Due by Wednesday.

2. Other extra credit available this week. Complete "Switch On!" mini-labs #16-40 for extra lab points. Due by June 6th.

Seniors, your finals begin next week. Your review is here: LINK

Non-seniors, your finals begin Friday the 1st. Your review is here: LINK

For both groups, you may bring your equation sheet (AKA Table of Friends) to the exam. You should also bring a calculator, and a pen/pencil. As usual, no phones for calculators.

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