At room temperature, electrical conductivity of semiconductor isgreater than that of a good conductor.zero.less than that of a good conductor.less than that of a bad conductor.
Question
At room temperature, electrical conductivity of semiconductor isgreater than that of a good conductor.zero.less than that of a good conductor.less than that of a bad conductor.
Solution
At room temperature, the electrical conductivity of a semiconductor is less than that of a good conductor.
Here's why:
-
Conductivity is the measure of a material's ability to conduct electric current. It is the reciprocal of resistivity.
-
In a good conductor, like metals, there are a large number of free electrons that can move easily, resulting in high conductivity.
-
Semiconductors, on the other hand, have fewer free electrons. At room temperature, some electrons have enough thermal energy to jump from the valence band to the conduction band, creating electron-hole pairs. These pairs contribute to the conductivity of the semiconductor.
-
However, the number of these electron-hole pairs (and thus the conductivity) is still much less than the number of free electrons in a good conductor.
-
Therefore, at room temperature, the electrical conductivity of a semiconductor is less than that of a good conductor.
Similar Questions
As the temperature of a semiconductor increases its(1 Point)Conductivity increasesResistivity increasesAtomic number decreasesTemperature co-efficient becomes zero
At room temperature, the N-type semiconductor will have
P-Type semiconductor has a lower electrical conductivity than N-Type semiconductor.(1 Point)TrueFalse
A semiconductor has ………… temperature coefficient of resistance.Select one:a. Negativeb. Zeroc. Infinited. Positive
Choose the incorrect statement from the following:Semiconductors exhibit electrical properties between conductors and insulators.Electrical resistivity decreases with addition of impurities in semiconductors. Electrical conductivity decreases in semiconductors with increasing temperature. Examples of semiconductors include Germanium and Silicon.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.