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Pure Si at 500 K has equal number of ele...

Pure Si at 500 K has equal number of electron `(n_(e ))` and hole `(n_(h))` concentrations of `1.5xx10^(16)m^(-3)`. Doping by indium increases `n_(h)` to `4.5xx10^(22)m^(-3)`. The doped semiconductor is of ………

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`n_(e)=(n_(1)^(2))/(n_(h))=((1.5xx10^(16))^(2))/((4.5xx10^(22)))=5xx10^(9)m^(-3)`
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Pure Si at 300K has equal electron (n_(e)) and hole (n_(h)) concentrations of 1.5xx10^(16)m^(-3) Doping by indium increases n_(h) to 3xx10^(22)m^(-3) . Calculate n_(e) in the doped Si.

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At temperature 300 K number density of electrons and holes in pure silicon is 1.5xx10^(16)m^(-3) . The number density of hole increase by 4.5xx10^(22)m^(-3) dopping the indium impurity so calculate number denstiy of electron.

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ALLEN -WAVES AND OSCILLATIONS-Part-3(Example)
  1. Pure Si at 300K has equal electron (n(e)) and hole (n(h)) concentratio...

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  2. What will be conductivity of pure sillicon crystal at 300 K temp? if e...

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  3. Pure Si at 500 K has equal number of electron (n(e )) and hole (n(h)) ...

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  4. A semiconductor has equal electron and hole concentration of 6xx10^(8)...

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  5. The resistance of p-n junction is low when forward biased and is high ...

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  6. What is an ideal diode ? Draw the output waveform across the load resi...

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  7. A potential barrier of 0.50V exists across a p-n junction.(a) If the d...

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  8. Figure Shows a diode connected to an external resistance and an e.m.f...

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  9. Differentiate zener and avalance breakdown.

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  10. A sinusoidal voltage of amplitude 25 volts and frequency 50 Hz is appl...

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  11. The halfwave rectifier supplies power to be 1 k Omega. The input suppl...

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  12. A fullwave rectifier supplies a load of 1 k Omega. The a.c voltage app...

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  13. A fullwave P.N diode rectifier used load resistor of 1500 Omega. No fi...

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  14. A zener diode of voltage V(Z)(=6 volt) is used to maintain a constant ...

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  15. A Zener diode is specified having a breakdown voltage of 9.1 V with a ...

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  16. In a transistor, the value of beta is 50. Calculate the value of alpha

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  17. Calculate the collector and emitter current for which I(b) = 20 mA, be...

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  18. For a common emitter amplifier, current gain = 50. If the emitter curr...

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  19. Transistor with beta = 75 is connected to common-base configuration. W...

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  20. The base current is 100 muA and collector current is 3 mA (a) Calcul...

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