Several paper clips dangle from the north pole of a magnet. The induced pole in the bottom of the lowermost paper clip is a
A) north pole.
B) south pole.
C) north or south pole-no difference.
Correct Answer:
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Q12: A magnet will become weaker if it
Q14: An iron rod becomes magnetic when
A)positive ions
Q15: The source of all magnetism is
A)tiny bits
Q17: Refrigerator magnets
A)have short range.
B)are without magnetic poles.
C)both
Q18: Magnetic domains normally occur in
A)iron.
B)copper.
C)silver.
D)all of the
Q19: Compared to the huge force that attracts
Q20: The rule for the interaction of magnetic
Q20: Magnetism is due to the motion of
Q21: No magnetic force acts on a current
Q22: A bar magnet that holds a chain
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