Solid State Electrical Properties and Band Theory

The video tutorial explains the electrical properties of solids, focusing on electrical conductivity. It describes how solids are classified into conductors, insulators, and semiconductors based on their conductivity range. The tutorial further delves into the conduction of electricity in metals using band theory, highlighting the role of valence and conduction bands in determining conductivity.

Explain the significance of the bandwidth in the context of electrical conductivity.

What determines the conductivity of a substance according to band theory?