Refrigerator magnets
A) have short range.
B) are without magnetic poles.
C) both
Correct Answer:
Verified
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
Q15: The intensity of cosmic rays bombarding the
Q16: Several paper clips dangle from the north
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
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