PHYSICS F/SCI.+ENGR.,CHAPTERS 1-37
5th Edition
ISBN: 9780134378060
Author: GIANCOLI
Publisher: RENT PEARS
expand_more
expand_more
format_list_bulleted
Question
Chapter 40, Problem 38P
To determine
Prove that the average energy of
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
(c) Calculate the Fermi energy of silver from the
data given below:
atom.
Density of Silver = 10.5 gm/cm³
atomic weight = 108
h = 6.62×10-34 Joule - sec
m = 9.1×10-³1 Kg.
Avogadro's number =6.02×10-21 atoms/gm-
(i) The total electrical resistivity of metals is the sum of the contributions from thermal vibrations, impurities and plastic deformation; (ii) the resistivity rises linearly with temperature above -200 degree Celsius; (iii) increasing the concentration of impurity results in an enhancement of impurity; (iv) plastic deformation also raises the electrical resistivity due to the increased numbers of electron-scattering dislocations. Which of the above statements is false? D. (iv) A. (i) C. (iii) E. All of the above B. (ii) Other:
1) A Si p-n-p transistor has the following properties at room temperature:
Tn = Tp
0.1 us
NE
1019 сті
Emitter concentration
— 10 ст2/s
-3
Dn = Dp
NB 3D 1016 ст
Base concentration
Nc
1019 ст
-3
= Collector concentration
WE
3 µm
Emitter width
W
1.5 um
Metallurgical base width, i.e. the distance between base-emitter junction and
base-collector junction
A = 10-5 cm² = Cross-sectional area
If VCB = 0 V and VEB = 0.6 V, calculate the following:
ЕВ
a) Neutral base width (WB)
b) Base transport factor
c) Emitter injection efficiency
d)
a, ß and y.
e) Ic, Ig and Ig.
Chapter 40 Solutions
PHYSICS F/SCI.+ENGR.,CHAPTERS 1-37
Ch. 40 - What type of bond would you expect for (a) the N2...Ch. 40 - Describe how the molecule CaCl2 could be formed.Ch. 40 - Does the H2 molecule have a permanent dipole...Ch. 40 - Although the molecule H3 is not stable, the ion...Ch. 40 - The energy of a molecule can be divided into four...Ch. 40 - Would you expect the molecule H2+ to be stable? If...Ch. 40 - Explain why the carbon atom (Z = 6) usually forms...Ch. 40 - Prob. 1PCh. 40 - (II) The measured binding energy of KCl is 4.43eV....Ch. 40 - (I) Show that the quantity 2/I has units of...
Ch. 40 - Prob. 9PCh. 40 - Prob. 23PCh. 40 - Prob. 24PCh. 40 - Prob. 25PCh. 40 - Prob. 26PCh. 40 - Prob. 27PCh. 40 - Prob. 28PCh. 40 - Prob. 30PCh. 40 - Prob. 31PCh. 40 - Prob. 32PCh. 40 - Prob. 33PCh. 40 - Prob. 34PCh. 40 - Prob. 35PCh. 40 - Prob. 36PCh. 40 - Prob. 37PCh. 40 - Prob. 38PCh. 40 - Prob. 39PCh. 40 - Prob. 40PCh. 40 - Prob. 41PCh. 40 - Prob. 42PCh. 40 - Prob. 43PCh. 40 - Prob. 44P
Knowledge Booster
Similar questions
- .) The ratio of the effective density of states in the conduction band at E. + 2k,T to the effective density of states in the valence band at E, - k„T is 3 mn (A) m 3/2 (B) 3/2 (2". (C) (D) 到arrow_forward(b) Copper crystallises as FCC (face centred cubic). Given that the atomic radius and density of a given copper sample are 1.28 x 1010 m and 8.98 x 10' kg/m' respectively, carry out the following: Calculate the mass of the copper sample. T'ake Avogadro's number, NA = 6.023 x 1023 atoms/mole. (i) (ii) If the interatomic planar spacing, d, in the sample above is 2.96 x 1010 m, determine the angle at which the first Bragg reflection will occur from the (111) plane if x-radiation of wavelength 1.52 x 10-10 m is used for the analysis. (c) Give two uses of pure copper and two commercial applications of copper alloys.arrow_forwardAssume a temperature of 300 K and fi nd the wavelength of the photon necessary to cause an electron to jump from the valence to the conduction band in (a) germanium, (b) silicon, (c) InAs, and (d) ZnS.arrow_forward
- An abrupt uniformly doped silicon pn junction is reversed biased by Vg= 20 V. If Na(in n-side)=10" cm, N,(in p-side)=10" cm then the junction capacitance is 20 pF. The junction capacitance if Na(in n-side) increased to 3x10" cm' is equal to ....pF. a) 9 b)21 c)35 d) 52 e) 87arrow_forwardSilicon atoms with a concentration of 7x 1010 cm are added to gallium arsenide GaAs at T = 400 K. Assume that the silicon atoms act as fully ionized dopant atoms and that 15% of the concentration added replaces gallium atoms to free electrons and 85% replaces arsenic to create holes. Use the following parameters for GaAs at T = 300 K: N. = 4.7 x 1017cm-3 and N, = 7 x 1018 cm-3. The bandgap is E, = 1.42 eV and it is constant over the temperature range. The intrinsic concentration?arrow_forwardIn a Si semiconductor sample of 200 am length at 600 K the hole concentration as a' function of the sample length follows a quadratic relation of the form p (x) = 1 x1015x, at equilibrium the value of the electric field at 160 jum will be: O 1.935 V/cm O 3.250 V/cm O 5805 V/cm O 55.56 V/cm O 6.450 V/cmarrow_forward
- 3) The Seebeck voltage for Copper Constantan (Cn) thermocouple is given by the linear relation V = a+ bT, For Cu : a = 0.6 mV, andb=0.008 mV/K. For Cn : a = -20 mV, and b = -0.056 mV/K. Calculate the thermoelectric power when the hot junction is at 100 C. 24 where T is the absolute temperature of the hot junction, and a and b are constantsarrow_forwardPhysics . Determine the number of conduction electrons/m3 in pure silicon AND silicon’s conductivity σfora) T = 10 Kb) T = 100 Kc) T = 1000 Kd) Conceptually, why does Si’s conductivity get better with increasing temperature?(For intrinsic Si, me* = 1.08me, μe = 1400cm2/V∙s, mh* = 0.60me, μh = 450cm2/V∙s, at. wt. = 28.085g/mol, density = 2.329 g/cm3).arrow_forwardWhat mass of phosphorus is needed to dope 1.0 g of silicon so that the number density of conduction electrons in the silicon is increased by a multiply factor of 106 from the 10^16 m-3 in pure silicon.arrow_forward
- Cu Assume that the crystal structure of metallic copper (Cu) results in a density of atoms p = 8.46 × 10²m 3. Each Cu atom in the crystal donates one electron to the conduction band, which leads, for the 3-D Fermi gas, to a densityu of states g(ɛ) = 2 x = ( 2 m ² ) ² 1/2 where m is the effective mass of the conduction electrons. In the low temperature limit (i.c. T = 0 K), find the Fermi energy E, in units of eV. You may assume m* to be equal to the free electron mass marrow_forwardWhat fraction of the electrons in a good conductor have energies between 0.90 EF and EF at T = 0?arrow_forwardIf a pentavalent element like antimony is doped to an extent of 1 atom in 10^8 germanium atoms what will be the conductivity after doping? (Concentration of germanium atoms in given sample is calculated as 4.41*10^28/m^3; consider the mobility of electron and hole as 0.38 and 0.18m^2/V.s, respectively)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- University Physics Volume 3PhysicsISBN:9781938168185Author:William Moebs, Jeff SannyPublisher:OpenStax
University Physics Volume 3
Physics
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:OpenStax