Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 58

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59. At absolute zero, $Si$ acts as

======= ####59. At absolute zero, $Si$ acts as

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(b) metal

(c) insulator

(d) none of these

[1988]

Topic 2: Junction Transistor

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Answer:

Correct Answer: 59. (c)

Solution:

  1. (c) Semiconductors are insulators at room temperature.

At absolute zero temperature (OK) conduction band of semiconductor is completely empty i.e., $\sigma=0$. So semiconductor behaves as an insulator.