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What is the ratio of n(p) to n(e) , in a...

What is the ratio of `n_(p)` to `n_(e)` , in an n-type semi conductor?

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The electron concentration in an n-type semiconductor is the same as hole concentration in a p-type semiconductor. An eternal field (electric) is applied across each of them. Compare the currents in them (1) current in p-type>current in n-type (2) current in n-type>current in p-type (3) No current will flow in p-type, current will only flow in n-type (4) current in n-type=current in p-type

The electron concentration in an n-type semiconductor is the same as hole concentration in a p-type semiconductor. An eternal field (electric) is applied across each of them. Compare the currents in them (1) current in p-type>current in n-type (2) current in n-type>current in p-type (3) No current will flow in p-type, current will only flow in n-type (4) current in n-type=current in p-type

Explain with suitable examples the following : (a) n-type and p-type semi-conductors (b) F-centres (c) Ferromagnetism.

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What is the turns ratio i.e., transformer ratio, n_(s): n_(p) , in an ideal transformer which increases a.c. voltage from 220 V to 33000 V?

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AAKASH SERIES-SEMICONDUCTOR DEVICES-Exercise (very Short answer questions)
  1. Lets npand ne be the number of holes and conduction electrons in an in...

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  2. What is the ratio of number density of free electron and hole in a p-t...

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  3. What is the ratio of n(p) to n(e) , in an n-type semi conductor?

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  4. How does electrical conductivity of semiconductors vary with temperat...

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  5. What is p-n junction diode ? Define depletion layer.

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  6. What are 1) forward bias and 2) reverse - bias?

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  7. What happens to the width of depletionlayer ofa p-n-junction when it i...

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  8. To forward-bias a diode, its p-type is to be connected to the positive...

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  9. To reverse -bias a diode, its p-type is to be connected to the negativ...

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  10. Which type of biasing gives a semi-conductor diode very high resistanc...

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  11. Can the potential barrier across a p - n junction be measured by simpl...

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  12. Which type of break down results due to strong electric fields at the ...

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  13. Is it correct to say that a diode behaves like a closed switch in the ...

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  14. What is the use of a Zener diode?

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  15. In which bias zener diode characteristic is same as that of function d...

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  16. Distinguish half wave and full wave rectifiers

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  17. In half-wave rectification, what is the output frequency if the input ...

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  18. Can a zener diode be used in place junction diode in rectifier circuit...

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  19. What is a transistor ? i)What is a transistor ? ii) In an n-p-n tr...

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  20. Draw the circuit symbols for p-np and n-p-n transistors.

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