Magnetic Field of a Solenoid, assignment help

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Magnetic Field of a Solenoid Lab and Write Up

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Lab Assignment: Magnetic Field of a Solenoid Laboratory: Introduction • • • • This lab will demonstrate some of the principles of magnetic fields. When a current runs through a wire, a magnetic field is generated. In this lab, you will study the relationship between the magnitude of the magnetic field and the number of loops in a solenoid. First, design an experiment you could construct that might measure the magnetic field of a solenoid. What materials would you use? What would you measure? What results would you expect? What if the results were different; what would that indicate? Lab Assignment: Magnetic Field of a Solenoid Laboratory: Description Developing a Hypothesis: When a current-carrying wire forms a loop, it is called a solenoid. The number of loops of wire influences the magnitude of the magnetic field the solenoid produces. • • Create hypotheses of what you think the results of this experiment will be. What is the relationship between the number of loops of wire and the magnitude of the magnetic field? What is the relationship between the magnitude of the magnetic field in a solenoid and the distance from the solenoid? Defend your hypotheses with your knowledge of charges, conductors and insulators. Your answers will be part of your lab write-up that you submit to your teacher. Objectives: 1. Explore the magnitude of the magnetic fields of solenoids of varying numbers of loops. 2. Evaluate the relationship between the magnitude of the magnetic field of a conducting wire and the distance from a solenoid. Lab Assignment: Magnetic Field of a Solenoid Laboratory: Procedure Read the entire lab procedure and plan the steps you will take. 1. You can find the virtual lab by clicking here. 1. On the left side of the screen scroll down and click Physics then click the Electricity, Magnets & Circuits link. 2. Click the virtual lab called "Faraday's Electromagnetic Lab." Then click Download and it should automatically download and open on your computer. 3. Click on the tab that says Electromagnet. 4. Click on the radio button that says Show Field Meter. This will make a meter that detects the magnetic field appear. The X in a circle at the top of the meter is the location where the measurement is made. For the purposes of this lab, you will use the magnitude of the magnetic field, B. 5. Move the meter to a location to the left of the electromagnet, centered on the loop and just below the left edge of the battery. 6. Move the compass that is to the left of the battery so that it is also centered on the magnetic field meter. 7. Do not move either until you have completely filled in your first data table. 2. Prepare two data tables using your spreadsheet program. In the first row label the columns: Turns, Compass Direction, Current Direction, and Strength of Magnetic Field. In the first column label the rows 1, 1, 2, 2, 3, 3, 4, 4. 3. Move the voltage on the battery all the way to the right. Notice the compass direction and the direction of the movement of the light blue balls that represent electrons in the coil. Record this in your first data table. 4. Decrease the number of loops of the current to 1 and record the value of B. 5. Reverse the direction of the current by moving the slider on the battery all the way to the left. Record all the relevant information in your data table. 6. Repeat the procedures in Steps 3 and 4 for 2 coils, 3 coils and 4 coils. 7. Move the magnetic field meter directly to the left of its current location an inch or two. Try not to move it vertically. 8. Repeat Steps 3 through 6 with the magnetic field meter in this new location, which is farther from the electromagnet. Record your measurements and observations in your second data table. Lab Assignment: Magnetic Field of a Solenoid Laboratory: Analysis 1. Constructing Graphs: Using a graphing program, create a graph of the number of turns versus magnitude of the magnetic field for the two different locations of the magnetic field meter. Lab Assignment: Magnetic Field of a Solenoid Laboratory: Conclusions 1. Drawing Conclusions: What is the relationship between the magnitude of the magnetic field and the number of turns? Explain. 2. Drawing Conclusions: What is the relationship between the magnitude of the magnetic field and the distance from the solenoid? Explain. 3. Drawing Conclusions: What is the relationship between the direction of current in the wire and the direction of the magnetic field? Explain. The lab report that you submit to your teacher should include: 1. A document file (RTF) containing: -Your experimental design idea and answers to the initial questions -Your hypothesis about this experiment supported with physics concepts -Your data table from your experiments -Answers to the conclusions from this experiment 2. Copy the following spreadsheet information into your document: -Your data tables from your experiments -Your graph or graphs from the analysis section
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Explanation & Answer

Please find the attached solution.

Magnetic Field Strength vs Number of Turns
120

100

Magnetic Field Strength

80

60

Magnetic Field Strength Near
Magnetic Field Strength at a far distance

40

20

0
0

0,5

1

1,5

2

2,5

Number of Turns

3

3,5

4

4,5

Table 1: Magnetic field strength near the solenoid
Turns Compass Direction Current Direction Magnetic Field Strength
1 East
upwards
23,92
1 West
downwards
23,92
2 East
upwards
47,85
2 West
downwards
47,85
3 East
upwards
71,77
3 West
downwards
71,77
4 East
upwards
95,70
4 West
downwards
95,70

Table 2: Magnetic field strength at a distance from the solenoid
Turns Compass Direction Current Direction Magnetic Field Strength
1 East
upwards
1,45
1 West
downwards
1,45
2 East
upwards
2,91
2 West
downwards
2,91
3 East
upwards
4,36
3 West
downwards
4,36
4 East
upwards
5,82
4 West
downwards...


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Just what I was looking for! Super helpful.

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