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Electronic Devices and Circuits
Fermi level is the amount of energy in which
None of these
An electron can have at room temperature
A hole can have at room temperature
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
Must be given to an electron move to conduction band
Answer
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Related Question
Electronic Devices and Circuits
Assertion (A): A p-n junction has high resistance in reverse direction.Reason (R): When a reverse bias is applied to p-n junction, the width of depletion layer increases.
Both A and R are true and R is correct explanation of A
A is false but R is true
A is true but R is false
Both A and R are true but R is not a correct explanation of A
Both A and R are true and R is correct explanation of A
A is false but R is true
A is true but R is false
Both A and R are true but R is not a correct explanation of A
Answer
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Electronic Devices and Circuits
Hall effect is observed in a specimen when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
Antiparallel to magnetic field
In arbitrary direction
In the direction of current
Normal to both current and magnetic field
Antiparallel to magnetic field
In arbitrary direction
In the direction of current
Normal to both current and magnetic field
Answer
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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 increases
The number of free electrons and holes increase but not by the same amount
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 increases
The number of free electrons and holes increase but not by the same amount
Answer
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Electronic Devices and Circuits
The most commonly used semiconductor material is
None of these
Mixture of silicon and germanium
Germanium
Silicon
None of these
Mixture of silicon and germanium
Germanium
Silicon
Answer
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Electronic Devices and Circuits
In a half wave rectifier, the load current flows
Only for the negative half cycle of the input signal
For less than fourth cycle
Only for the positive half cycle of the input signal
For full cycle
Only for the negative half cycle of the input signal
For less than fourth cycle
Only for the positive half cycle of the input signal
For full cycle
Answer
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