if the energy gap is between( 1.2 and 5) eV this is a O conductor: semiconductor insulator

The base current of a transistor is 4.4 A, and its current gain 1126. What is the collector current?

Why does the horizontal Line in the graph in Figure 9.12 suddenly stop at the Fermi energy? Figure 9.12 (a) Density of state for a free electron gas; (b) probability that a state is occupied at T = 0 K; (c) density if occupied states at T = 0 k.

A p-n diode has a reverse saturation current 1.44108A . It is forward biased so that it has a current of 6.78101A moving through it. What bias voltage is being applied if the temperature is 300 K?

The measured density of a CsCl crystal is 3.988 g/cm3. What is the equilibrium separate distance of Cs+ and Cl- ions?

What is the longest wavelength for a photon that can excite a valence election into the conduction band across an energy gap of 0.80 eV?

The Hall effect is demonstrated in the laboratory. A thin rectangular strip of semiconductor with width 5 cm and cross-sectional area 2 mm" is attached to a battery and immersed in a field perpendicular to its surface. The Hall voltage reads 12.5 V and the measured drift velocity is 50 m. s. What is the magnetic field?

The Csl crystal structure is BCC. The equilibrium spacing is approximately r0=0.46nm . If Cs+ ion a occupies a cubic volume of r03, what is the distance of this ion to its "nearest neighbor” I+ ion?

Measurements of a superconductor's critical magnetic field (in T) at various temperatures (in K) are given below. Use a line of best fit to determine Bc(0). Assume Tc = 9.3 K.

The NaCl crystal structure is FCC. The equilibrium spacing is r0=0.282nm. If each ion occupies a cubic 3 volume of r03 , estimate the distance between “nearest neighbor” Na+ ions (center-to-center)?