WorksheetsBand Theory and Semiconductors
Total questions: 8
Worksheet time: 7mins
In an insulating material, _______.
the valence band is filled and the conduction band is empty
conduction band is filled,
the valence band is empty.
both the valence band and conduction band are empty
both the valence band and conduction band are partially filled
The energy level diagram shown applies to ___.
A conductor
An insulator
A semiconductor
An isolated molecule
A material with a relatively large gap between its valance band and conduction band would be expected to be ______.
a good conductor
easily melted
a poor conductor
in the liquid state
According to the band theory of solids, why is lead a good conductor?
There is a wide energy gap between the valance band and conduction band of lead
The valance band of lead is empty and the conduction band is filled
The valance band and the conduction band of lead is half filled.
The conduction band of lead overlaps the valance band
What is the approximate energy gap between the valance band and conduction band of a semiconductor?
0 eV
1 eV
5 eV
10 eV
Which of the following is not a semiconductor?
Silicon
Gallium
Germanium
Aluminum
A material that conducts electricity well tends to have ______.
no valance electrons
partially filled bands
completely filled bands
conduction and valance bands that are far apart
_______ is an insulator.
Copper
Silicon
Gold
Table salt
