Exercise: Magnetism And Electromagnetism

Questions for: Magnetism And Electromagnetism

Electromagnetic induction is the force that produces a magnetic field.
A:
True
B:
False
C:
D:
Answer: B
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Materials with a low retentivity do not retain a magnetic field very well.
A:
True
B:
False
C:
D:
Answer: A
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If a conductor is moved back and forth at a constant rate in a constant magnetic field, the voltage in the conductor will reverse polarity.
A:
True
B:
False
C:
D:
Answer: A
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Hysteresis is the number of lines of force per unit area in a magnetic field.
A:
True
B:
False
C:
D:
Answer: B
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A magnetic field is made up of flux lines.
A:
True
B:
False
C:
D:
Answer: A
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