H. Addition of impurity to increase the conductivity I. Charges are holes and electrons
Match the above lists:
A
A-H,I B-E C-F D-G
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B
A-E B-F,I C-G D-H
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C
A-F B-G C-H D-E,I
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D
A-G,I B-H C-E D-F
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Solution
The correct option is A A-F B-G C-H D-E,I [A] Hole : Can be termed as energy vacancy as it is occupied by electron. [B] Copper : It is a metal thus have a positive temperature coefficient of resistance. [C] Doping : Is the addition of impurity to increase the conductivity. [D] Germanium : It is a semiconductor thus have a positive temperature coefficient of resistance and charge carriers are holes and electrons.