Download presentation

Presentation is loading. Please wait.

Published byGary Wimbley Modified over 2 years ago

1
HW7 due on Friday Turn in HW6 Stand by to receive back HW5 EXAM 2 coming up on Monday !!!!! March 30 th

2
Magnetic field due to a long (straight) wire: Let’s review:

3
current on ( I up ! ).

4
Right hand rule (#1)

5
( I up/out ! ). DIRECTION-OK MAGNITUDE???

6
Experiment shows: For a long straight wire

7
Example: Suppose a cable is carrying 100 A current. What’s the B-field 1 cm from the cable? How about 10 cm?

8
Example: The cables are each carrying 25 A out the of page. What’s at point Q? 13.0 cm Q

9
Example: The cables are carrying 25 A out the of page. What’s at point P? Superposition! Next … 13.0 cm P

10
P Example: The cables are each carrying 25 A out the of page. What’s at point Q?

11
P Now: Vector Superposition! Next …

12
Example: The cables are each carrying 25 A out the of page. What’s at point Q?

13
Forces between current-carrying conductors

18
Opposite Currents Repel!

21
Parallel Currents attract! (same magnitude as other case!)

22
Example: What force per unit length do two cables 1 cm apart produce on each other? (They’re carrying 50 A each.) How about at 10 cm?

23
What about currents perpendicular to each other? …

25
Fun example: Force/m?

26
Fun example: How much current do you need in the third wire so the net forces are zero?

27
Current Loop: up/out down/in Solenoids

28
Current LoopS: up/out down/in

30
Solenoid: up/out down/in

31
WRENCH DEMO

32
Example: What’s the B-field inside a coil with 50 turns/cm, running a current of 2 A?

Similar presentations

Presentation is loading. Please wait....

OK

Chapter 30 - Magnetic Fields and Torque

Chapter 30 - Magnetic Fields and Torque

© 2018 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on self awareness games Ppt on marie curie fellowship Marketing mix ppt on nokia Ppt on minimum wages act Ppt on statistics in maths cheating Ppt on reflection in c# System design ppt on software engineering Ppt on abo blood grouping test Ppt on home security system using gsm Ppt on object-oriented programming examples