Magnets Lab

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School

University of Nebraska, Omaha *

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Course

4450

Subject

Physics

Date

Apr 3, 2024

Type

pdf

Pages

7

Uploaded by Sarlaman on coursehero.com

Learning Goals: Students will be able to 1. Predict the direction of the magnet field for different locations around a bar magnet and electromagnet. 2. Compare and contrast bar magnets and electromagnets 3. Identify the characteristics of electromagnets that are variable and what effects each variable has on the magnetic field’s strength and direction. 4. Relate magnetic field strength to distance quantitatively and qualitatively 5. Compare and contrast the fields of gravity and magnets qualitatively 1. Investigate Faraday’s Electromagnet Lab paying attention to what you can change and what tools you can use to make measurements. We will be using the Bar Magnet and Electromagnet tabs for this activity and the other tabs later. Within the Bar Magnet tab, we can manipulate a magnet and a compass. It allows us to increase or decrease the strength of the magnet and flip the magnet’s polarity. Also, we can see the magnetic field, both outside and inside of the magnet. Finally, we can use a field meter tool. Within the Electromagnet tab, we have the choice of a DC or AC current source, both of which have loops that can be increased or decreased in quantity. Like the Bar Magnet tab, we can see the magnetic field, compass, and field meter tool. Finally, we can display the electrons going through the loops, into the current source.
2. Read the first four learning goals and design experiments using the simulation that would help you learn these specific things. You do not have to write the procedures but be prepared to explain to the instructor or another student your designs. Write a document that gives evidence that you can meet the learning goals. (Include illustrations drawn by hand.) Experiment 1: Predict the direction of the magnet field for different locations around a bar magnet and electromagnet. Without using the “Field” or “Compass” features, predict and sketch what the compass would look like at the following positions around a Bar Magnet and Electromagnet. Use the “Field” and “Compass” features to compare the results to your predictions. At which points (A-D) would the compass look like the one drawn below?
Compare and contrast bar magnets and electromagnets. Recall previously learned information to help you answer the following questions: Explore and experiment under the Bar Magnet and Electromagnet tabs, record their similarities and differences. What happens when you increase or decrease the Bar Magnet strength. What happens when you flip the Bar Magnet polarity? What happens when you increase or decrease the amount of loops in the Electromagnet? Within Electromagnets, what is the difference between the AC and DC current sources, what causes this? Sketch the two alternating compass directions at the following positions around an Electromagnet with an AC current source. 1 4 5 6 3 2 Point 1 Possibilities: Point 2 Possibilities: Point 3 Possibilities: Point 4 Possibilities: Point 5 Possibilities: Point 6 Possibilities:
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