Electronic Devices and Circuits
Fermi level is the amount of energy in which

Must be given to an electron move to conduction band
None of these
An electron can have at room temperature
A hole can have at room temperature

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

The number of free electrons and holes increase by the same amount
The number of free electrons increases but the number of holes decreases
The number of free electrons and holes increase but not by the same amount
The number of free electrons increases

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Electronic Devices and Circuits
When diodes are connected in series to increase voltage rating the peak inverse voltage per junction

should not exceed the breakdown voltage
should not exceed half the breakdown voltage
should not exceed one third the breakdown voltage
may be equal to or less than breakdown voltage

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Electronic Devices and Circuits
Assertion (A): In p-n-p transistor collector current is termed negative.Reason (R): In p-n-p transistor holes are majority carriers.

A is false but R is true
Both A and R are true but R is not a correct explanation of A
A is true but R is false
Both A and R are true and R is correct explanation of A

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