Multiple Choice
An iron rod becomes magnetic when
A) positive ions accumulate at one end and negative ions at the other end.
B) its atoms are aligned having plus charges on one side and negative charges on the other.
C) the net spins of its electrons are in the same direction.
D) its electrons stop moving and point in the same direction.
E) none of these
Correct Answer:
Verified
Correct Answer:
Verified
Q2: If a steady magnetic field exerts a
Q3: The source of all magnetism is<br>A)tiny pieces
Q4: An iron nail is more strongly attracted
Q5: Which force field can accelerate an electron,but
Q6: Outside a magnet,magnetic field lines are conventionally
Q7: Magnetism is due to the motion of
Q8: Superconducting electromagnets<br>A)exist now.<br>B)may be possible in the
Q9: Magnetic compasses apparently were first used by<br>A)Columbus.<br>B)Greeks.<br>C)Australian
Q10: The field surrounding every moving electron is<br>A)always
Q11: If a compass is moved from the