Energy is required to create a magnetic field, and energy is required to maintain a magnetic field.
Correct Answer:
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Q6: Because they are always able to align
Q7: When a coil is wound around a
Q8: A speaker uses three separate magnets. One
Q9: Magnetic lines of flux repel each other
Q10: There are actually only three substances that
Q12: A basic law of physics states that
Q13: The angular difference between true north and
Q14: For a magnet with an area of
Q15: When an object is to be demagnetized,
Q16: _ will demagnetize an object.
A) Freezing
B) Rubbing
C)
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