Question

Semiconductors are materials having an electrical conductivity :

• A. Less than insulators
• B. between ${10}^{-8}S/cmto{10}^{3}S/cm$
• C. Equal to zero
• D. Greater than ${10}^{3}S/cm$

Answer 1

Answer: (B)

Semiconductors are neither highly conducting nor highly insulating materials and hence have moderate conductivity. Therefore, their conductivity lies in between ${10}^{-8}$ and ${10}^3$ S/cm.

Insulators have the least conductivity i.e. $<{10}^{-8}$ S/cm whereas conductors have the highest conductivity which is $>{10}^3$ S/cm.