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Questions  

Which of the following statements is not true?

a
The resistance of intrinsic semiconductors decreases with increase of temperature.
b
Doping pure Si with trivalent impurities gives p-type semiconductors.
c
The majority carriers in n-type semiconductors are holes.
d
A p-n junction can act as a semiconductor diode.

detailed solution

Correct option is C

The correct choice is (3). The majority carriers in n-type semiconductors are electrons.

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If  P-N junction  diode is connected in forward bias at 1.5V  then  40 mA  and  at 2V -60 mA   of current  are passing. If  some P- N  junction diode is connected in reverse bias at  2V  then 0.0 μA  and at 4v - 0.2 μA  of current  is passing then calculate  resistance of diode in  forward bias and reverse bias


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