June 9 Scribe Post

Hey everyone!

I would like to start off by reminding everyone there will be a test on friday and our exam begins on tuesday in class! You only need to bring writing devices and a calculator to the exam, do not bring your books and papers! :D

Okay so we began todays class with a demonstration about Lens law. We saw that a magnet dropped down a copper tube took longer to fall then a regular piece of metal.

Next we went through a worksheet called Electromagnetic Induction (Lenz's Law)
The answers are...
1. Left side: N Right side: S Current: up
2. Left side: S Right Side N Current: down
3. Left side: S Right Side: N Current: down
4. Left side: S Right side: N Current down
5. Left side: S Right side: N Current down
6. Left side: N Right side: S Current: up
7. Left side: N Right side: S Current up
8. no current.

We then corrected the Transformers worksheet.
1. 1200v
2. 1.2A
3. 1440W
4. 1440 W
5. 12A
6.up, down
7. more, less
8. voltage, energy and power
9. step down, 20/1
10. ac, continually change

Lastly we corrected the chapter 26 review. We did not have to do questions 4 and 5.
1. 5.0 x 10^-4 v
2. 2.24x10^-5A
3. down
6. Left side: s Right side: N Current: up
7. 125:1
8. a)300 000 b) 1: 2 500
9. a) 3 x 10^5 b) 0.06A c) 18 000 W

The next few days of class will be used for asking questions about the exam and test. Have fun studying!