Give values of energy gap `(E_g)` for a semiconductor and for an insulator.

Define energy gap.

What is the value of band gap and in semiconductor?

The energy gaps in the energy band diagrams of a conductor, semiconductor and insulator are E_1 , E_2 , and E_3 . Arrange them in increasing order.

The intrinsic semiconductor behaves as insulator at:

Draw the energy-band diagram for an insulator.

Draw a labelled energy band diagram for an insulator,a conductor and a semiconductro.

What is the value of electrical conductivity of a semiconductor at absolute zero?

Draw the energy band diagram of N-type semiconductor.

Energy of the photon of sodium light of wavelength 5,890 overset @A equals the energy gap between valence and conduction band of a semiconductor. Find the minimum energy E required to create a hole-electron pair.