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Electronic Devices and Circuits - Engineering

Q1:

An intrinsic silicon sample has 1 million free electrons at room temperature. As the temperature is increased

A the number of free electrons increases

B the number of free electrons increases but the number of holes decreases

C the number of free electrons and holes increase by the same amount

D the number of free electrons and holes increase but not by the same amount

ANS:C - the number of free electrons and holes increase by the same amount

As temperature is increased so the covalent bonds will be broken therefore there will be generation of equal number of electron and hole pairs.