Overview
Start the Magnet and CompassLinks to an external site. simulation.
a. Which way do the magnetic field lines point: N to S or S to N?
b. Move the compass around. Describe how the needle orients with respect to the magnetic field lines, in terms of direction the arrow points and whether it aligns with the field lines.
View keyboard shortcuts
pView keyboard shortcutsAccessibility Checker0 wordsSwitch to the html editorFullscreenFlag question: Question 2Question 24 pts
With pencil and paper, make a sketch of 5 continuous magnetic field lines around the bar magnet. Include 2 lines inside the magnet.
Upload a photo of your sketch.
Upload Choose a File
Flag question: Question 3Question 36 pts
Click on the 'Earth' setting.
Put the compass next to the locations listed below. For each location, which way does the N end of the compass needle point, and how is the needle oriented with respect to the field lines of the Earth?
a. North Pole
b. Equator
c. South Pole
View keyboard shortcuts
pView keyboard shortcutsAccessibility Checker0 wordsSwitch to the html editorFullscreenFlag question: Question 4Question 42 pts
On the 'Earth' setting.
Put the compass on the map, near San Diego.
Upload a screenshot of this.
Upload Choose a File
Flag question: Question 5Question 55 pts
Start the Magnets and ElectromagnetsLinks to an external site.Simulation and go to 'Electromagnet'. Make sure that the current source is set to Battery.
With pencil and paper, sketch 5 continuous magnetic field lines around the electromagnet. Include 2 lines that go through the electromagnet.
Also include the orientation of the compass needle in your sketch.
Upload a picture of your sketch.
Upload Choose a File
Flag question: Question 6Question 65 pts
With the current source set on Battery, click on the Field Meter.
a. How does the magnetic field strength (B) change as you move away from the electromagnet?
b. Put the meter next to the right side of the electromagnet (along the axis of the magnet but not inside). What is the reading?
c. How does this reading change if you decrease the number of loops in the electromagnetic from 4 to 2?
d. Why does the reading change?
View keyboard shortcuts
pView keyboard shortcutsAccessibility Checker0 wordsSwitch to the html editorFullscreenFlag question: Question 7Question 76 pts
Set the loops to 4 and keep the Field Meter on the right side of the electromagnet.
Change the current source from Battery to the AC power (green wavy line next to the battery).
In an AC power supply, the current continually reverses direction.
a. Describe how the magnetic field lines change.
b. Describe how the x component of the magnetic field (Bx) changes.
c. Explain why this is happening.