Question

Which conductor has more electrical conductivity?

• A. Intrinsic semiconductors
• B. Extrinsic semiconductors
• C. Both have same.
• D. Can't compare

Answer 1

The correct option is B Extrinsic semiconductors

The conductivity of an extrinsic semiconductor is more than that of an intrinsic semiconductor. This is because, in an intrinsic (pure) semiconductor, the carriers are only thermally generated carriers. But in extrinsic semiconductors, which is doped with a p-type or n-type impurity to form p-type and n-type semiconductor so as to increase the number of holes or number of electrons in a semiconductor respectively. More the charge carriers, more is the conductivity.