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Q1:

As the temperature increases the mobility of electrons __________ .

A decreases because the number of carries increases with increased collisions

B increases because the number of carries decreases with decreased collisions

C remains same

D none of the above

ANS:A - decreases because the number of carries increases with increased collisions

Mobility of electrons m = 2.5 for electrons and 2.7 for holes in Si.



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