No magnetic force acts on a current carrying wire when it
A) carries a very small current.
B) is perpendicular to the magnetic field.
C) either or both
D) none of the above
Correct Answer:
Verified
Q15: The intensity of cosmic rays bombarding the
Q16: Several paper clips dangle from the north
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: Magnetism is due to the motion of
Q23: An electromagnet consists of a
A)bar magnet that
Q24: Superconducting electromagnets
A)exist now.
B)may be possible in the
Q25: Magnetic field lines about a current-carrying wire
A)extend
Q26: Surrounding our planet Earth are
A)cosmic rays.
B)magnetic fields.
C)both
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