Electronic Devices and Circuits - Engineering

Q1:

The conductivity of materials found in nature ranges from 109 ohm-1m-1 to nearly 1018 ohm-1 m-1 from this it can be concluded that the conductivity of silicon in ohm-1 cm-1 will be nearly

A 0.5 x 10-15

B 0.5 x 10-21

C 0.5 x 10-12

D 0.5 x 10-3

ANS:D - 0.5 x 10-3

Please give me the explanation of the answer.