- #1
thereddevils
- 438
- 0
Why is the number of electrons per unit volume , n fixed in a conductor regardless of the temperature while its not in semiconductors ??
Stonebridge said:I think you mean number of free/conduction electrons.
In a semiconductor, electrons can promoted to the conduction band by thermal energy; i.e. by raising the temperature of the material. In a conductor, the number of free/conduction electrons is more or less at saturation, and heating the material does not produce any more.
Of course the total number of electrons in the material is not affected by temperature.
The number of electrons per unit volume is calculated by dividing the total number of electrons in a given volume by the volume itself.
The unit of measurement for number of electrons per unit volume is typically expressed as electrons per cubic meter (e/m³) or electrons per cubic centimeter (e/cm³).
The number of electrons per unit volume can vary depending on the type of material. Metals, for example, tend to have a higher number of electrons per unit volume compared to insulators.
Yes, the number of electrons per unit volume can be manipulated through various methods such as applying an electric field or changing the temperature of the material.
The number of electrons per unit volume plays a crucial role in the conductivity and overall performance of electronic devices. It helps determine the flow of electric current and the behavior of materials in different electronic components.