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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.

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Solution

At room temperature, the electrical conductivity of a semiconductor is less than that of a good conductor.

Here's why:

  1. Conductivity is the measure of a material's ability to conduct electric current. It is the reciprocal of resistivity.

  2. In a good conductor, like metals, there are a large number of free electrons that can move easily, resulting in high conductivity.

  3. 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.

  4. 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.

  5. Therefore, at room temperature, the electrical conductivity of a semiconductor is less than that of a good conductor.

This problem has been solved

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