Mark the wrong statement in the following regarding intrinsic semi conductor1) Under the action of applied electric field holes move towards positive potential 2) The total current in an intrinsic semi conductor is I=Ie+Ih , Ie=current due to electron Ih=Hole current3)The process of generation of conduction electrons and holes, and the process of recombination of holes and electron takes place simultaneously 4) Carbon, Silicon and Germanium are intrinsic semi conductors
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a
1,2, 3
b
1,2,3,4
c
1, 4
d
2, 3
answer is C.
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Detailed Solution
1is wrong because under the action of applied electric field, holes move towards negative potential4 is wrong because carbon is an insulator , silicon, germanium are intrinsic semiconductor