12.1­2 ­ Magnetic Fields and Oersted's Principle.notebook
Opposite's Attract
Like Charges Repel
May 19, 2016
12.1­2 ­ Magnetic Fields and Oersted's Principle.notebook
May 19, 2016
Section 12.1
Pole to Pole
Discussion
The north pole of a magnetic compass swings When two magnetic poles are toward Earth’s north pole. What does this tell you brought near each other, the pattern about Earth’s north pole? How does this question of field lines reveals whether the relate to the direction of magnetic field lines?
poles are like or unlike. You can use iron filings to see this pattern.
Click on each image to reveal the field lines. Then, drag each label to the correct image.
like poles
Check
Answer
unlike poles
Check
Answer
12.1­2 ­ Magnetic Fields and Oersted's Principle.notebook
Maglev Train ...
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May 19, 2016
12.1­2 ­ Magnetic Fields and Oersted's Principle.notebook
Oersted's Principle
May 19, 2016
12.1­2 ­ Magnetic Fields and Oersted's Principle.notebook
May 19, 2016
Section 12.2
On the Other Hand...
The right­hand and left­hand rules for a straight conductor both predict the direction of the magnetic field lines when a current flows. Drag the correct descriptions to each of the diagram.
left­hand rule
electron flow
right­hand rule
conventional current
Check
Answer
12.1­2 ­ Magnetic Fields and Oersted's Principle.notebook
May 19, 2016
12.1­2 ­ Magnetic Fields and Oersted's Principle.notebook
May 19, 2016
ANSWERS
TEACHER'S NOTES
LESSON
12.1­2 ­ Magnetic Fields and Oersted's Principle.notebook
May 19, 2016
Section 12.1
Pole to Pole
Click on each image to reveal the field lines. Then, drag each label to the correct image.
Discussion
When two magnetic poles are brought near each other, the pattern of field lines reveals whether the poles are like or unlike. You can use iron filings to see this pattern.
like poles
unlike poles
Back
The n
towar
about
relate
12.1­2 ­ Magnetic Fields and Oersted's Principle.notebook
May 19, 2016
Section 12.2
On the Other Hand...
The right­hand and left­hand rules for a straight conductor both predict the direction of the magnetic field lines when a current flows. Drag the correct descriptions to each of the diagram.
left­hand rule
conventional current
right­hand rule
electron flow
Back
12.1­2 ­ Magnetic Fields and Oersted's Principle.notebook
May 19, 2016
Answers for Discussion Questions:
Slide 4
Sample answer:
Earth’s north pole must really be a south magnetic pole. Field lines go from the compass’s north pole to this “south” pole, which is why magnetic field lines are directed toward south.
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