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5. A magnetic field map shows

a. the direction of the magnetic field.
b. a few representational field lines.
c. relative strength of the magnetic field.
d. All of these choices are correct.

my answer: d

6. Magnetic field lines
a. can cross each other when the field is strong.
b. are visible lines seen around magnets.
c. can easily be drawn within the subatomic structure of a magnetic atom.
d. indicate which way a compass needle would point if placed near the magnet.

my answer: d

7. What happens to the direction of the magnetic field lines when the magnet responsible
for them is reversed?
a. The direction of the magnetic field lines is reversed.
b. The direction of the magnetic field lines stays the same.
c. The field density increases.
d. None of these choices is correct.

my answer: b

8. According to the law of magnetic poles
a. a magnetic South pole would attract a magnetic North pole.
b. a magnetic North pole would repel a magnetic South pole.
c. a magnetic South pole would attract a magnetic South pole.
d. magnetic poles in a bar magnet cancel each other out.

my answer: a

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