Determine the conductivity and resistivity of pure germanium at `300K` assuming that at this temperature the concentration of germanium is `2.5xx10^(13)cm^(-3)`. The electron and hole mobilities are `3600cm^(2)V^(-1)s^(-1)` and `1700cm^(2)V^(-1)s^(-1)` respectively.
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A system has two charges `q_(A)=2.5xx10^(-7) C` and `q_(B)=-2.5xx10^(-7) C` located at points A, `(0, 0, -0.15 m)` and B, `(0, 0, +0.15 m)` respective
Net charge `=2.5xx10^(-7) -2.5xx10^(-7)=0` Electric dipole moment, `P = ("Magnitude of charge")xx("Separation between charges")` `=2.5xx10^(-7) [0.15+0.15]C m =7.5xx10^(-8) Cm` the direction of dipole moment is from B to A.
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सिलिकॉन परमाणुओं की संख्या `5xx10^(28)` प्रति `m^(3)` है। यह साथ ही साथ आर्सेनिक के `5xx10^(22)`परमाणु प्रति `m^(3)` और इडियम के `5xx10^(20)` परमाणु प
Correct Answer - `n_(e)~~4.95xx10^(22);n_(h)=4.75xx10^(9);n`- प्रकार का चू्ंकि `n_(e)gt gt n(h)`
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The conductivity of 0.001 `"mol" L^(-1)` solution of `CH_(3)COOH " is " 3.905 xx 10^(-5) "S" cm^(-1)`. Calculate its molar conductivity and degree of
`wedge_(m) = (K("conductivity") xx 1000)/(M)` `= (3.905 xx 10^(-5) xx 1000)/(0.001)` `=39.055 " cm"^(2)"mol"^(-1)` `=(wedge^(c)m)/(wedge^(@)m) = (39.05)/(wedge^(@)m) " " [wedge_(CH_(3)COOH)^(@) = wedge_(CH_(3)COO^(-))^(@) + wedge _(H)^(@)+` `= 349.6 + 6 +0.9`...
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Determine the conductivity of pure germanium at `27^(@)C`. The concentration of the carriers at this temperature is `2.2 xx 10^(19)m^(-3)`. The mobili
Correct Answer - `1.87 Omega^(-1)m^(-1)`
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The resistance of 100m of copper wire of diameter `0.056 xx 10^(-2)` m is 6.62`Omega`. Calculate (i) resistivity, (ii) Electrical conductivity of copp
Correct Answer - (i) `1.63 xx 10^(-8)Omegam`
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Determine the number density of donor atoms which have to be added to an intrinsic germanium to produce an `n`-type semiconductor of conductity `0.06S
Correct Answer - `96x10^(16)m^(-3)`
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Germanium is doped one part million with indium at room temperature. Calculate the conductivity of doped germanium. Given: concentration of Ge atoms `
Correct Answer - `1.34xx10^(3)ohm^(-1)m^(-1)`
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The resistivity of pure germanium at a particular temperature is `0.52Omegam`. If the material is doped with `10^(20)` atoms `m^(-3)` of a trivalent i
Correct Answer - `0.195Omegam`
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A sample of germanium is doped to the extent of `10^(14)` donor atoms per `cm^(3)` and `7xx10^(13)` acceptor atoms per `cm^(3)`. The resistivity of pu
Correct Answer - `52.3mAcm^(-2)`
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On which factors does the electrical conductivity of a pure semiconductor depend at a given temperature?
For pure semiconductor, the number density of free electrons and number density of holes is equal. Thus, at a given temperature, the conductivity of pure semiconductor depends on the number...
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