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Materials and Components

Materials and Components
A vacant electronic state moves in the same direction as would a positive charge carrier.

False
True

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Materials and Components
The elements which become superconducting at extremely low temperatures are

Relatively poor conductors at room temperature
Good conductors at room temperature
Insulators at room temperature
Ferromagnetic at room temperature

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Materials and Components
Piezoelectricity means the slight change in dimensions of a specimen when an electric field is applied.

False
True

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Materials and Components
Many compounds also exhibit semiconducting properties.

False
True

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Materials and Components
The resistance of a photoconductor

Increases with increase in light intensity
May increase or decrease with increase in light intensity
Decreases with increase in light intensity
Remains constant

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Materials and Components
The dielectric losses do not depend on frequency.

False
True

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