Lecture (L2-1) Ohm's Law
- Due Aug 29, 2024 by 11am
- Points None
Application of the Day: Sea Ice Electrical Modeling and Measurement
This is a zoomed-in picture of the brine channels in a sample of sea ice. The brine pockets are very salty and highly conductive. (Is their resistance high or low?) The areas between the brine pockets are filled with pure ice that is much less salty, and barely conductive (Is this resistance high or low?)
- Where would you expect current to flow in this model?
For more info, see Technology Brief 6 in your textbook. Application: Sea Ice
Find out more: Fire & Ice from Dr. Furse:
Questions of the Day (Learning Objectives)
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What is Ohm's Law, and how do you apply it?
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What are Resistance, Conductivity and Resistivity? What is resistance used for?
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What are typical ranges of conductivity for conductors, semiconductors, and insulators? (See Table 2-1)
Readings and Reference Materials
Pre-Class Video Lecture
Watch this video lecture before class, and take notes on the Question of the Day.
http://youtu.be/W6rAAqTExbE
Links to an external site.
Power Point to take notes on: L(2-1) -- Ohms Law.ppt Download L(2-1) -- Ohms Law.ppt
Index for L(2-1): pdf
Download pdf | doc
Download doc
Self-Assessment: ECE1250_Assess2_1.pd Download ECE1250_Assess2_1.pd
Extra Examples
In Class
Bring your notes from the Question of the Day to class with you. We will start on your homework.
in class 2-1 CMF.docx Download in class 2-1 CMF.docx
L(2-1 in class) -- Ohms Law.ppt Download L(2-1 in class) -- Ohms Law.ppt
Homework
Comprehension Quiz
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