1 .		Electromagnetic induction is the force that produces a magnetic field. [Hint]  True  False
2 .		The tesla is the unit of magnetic flux. [Hint]  True  False
3 .		A relay is an electromagnetically controlled mechanical device in which electrical contacts are opened or closed by a magnetizing current. [Hint]  True  False
4 .		A magnetic field is made up of flux lines. [Hint]  True  False
5 .		Reluctance in a magnetic circuit is analogous to current in an electrical circuit. [Hint]  True  False
6 .		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. [Hint]  True  False
7 .		Lenz's law defines the polarity of the induced voltage. [Hint]  True  False
8 .		Hysteresis is the number of lines of force per unit area in a magnetic field. [Hint]  True  False
9 .		Materials with a low retentivity do not retain a magnetic field very well. [Hint]  True  False
10 .		Ampere-turn is the unit of magnetomotive force (mmf). [Hint]  True  False