Question

The range of electrical conductivity for insulators is (in $(ohm-m{)}^{-1}$)?

• A. ${10}^{-7}$
• B. ${10}^{-11}$
• C. ${10}^{-9}$
• D. ${10}^{-8}$

Answer 1

Answer: (B)

${10}^{-11}$

The range of electrical conductivity for conductors is ${10}^4$ to ${10}^7$ $(ohm-m{)}^{-1}$.

The range of electrical conductivity for semiconductoes is ${10}^{-6}$ to ${10}^4$ $(ohm-m{)}^{-1}$.

The range of electrical conductivity for insulators is less than ${10}^{-10}$ $(ohm-m{)}^{-1}$.

Hence, the correct option is $A$