Alpha Question Bank for Engineering: Physics>Chapter 35 - Semiconductor Devices>Exercise - 1>Q 3

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The forbidden energy bandgap in conductors, semiconductors and insulators are $E G_{1}, E G_{2}$ and $E G_{3}$ respectively. The relation among them is

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Important Questions on Semiconductor Devices

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Alpha Question Bank for Engineering: Physics>Chapter 35 - Semiconductor Devices>Exercise - 1>Q 4

Fermi energy is the

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Alpha Question Bank for Engineering: Physics>Chapter 35 - Semiconductor Devices>Exercise - 1>Q 5

Which of the following statements is true?

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Alpha Question Bank for Engineering: Physics>Chapter 35 - Semiconductor Devices>Exercise - 1>Q 6

Which of the following statement is true-

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Alpha Question Bank for Engineering: Physics>Chapter 35 - Semiconductor Devices>Exercise - 1>Q 7

The valence band at

(0 K)

is-

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Alpha Question Bank for Engineering: Physics>Chapter 35 - Semiconductor Devices>Exercise - 1>Q 8

The free electron concentration

(n)

in the conduction band of a semiconductor at a temperature

T

Kelvin is described in terms of

E_{g}

and

T

as –

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Alpha Question Bank for Engineering: Physics>Chapter 35 - Semiconductor Devices>Exercise - 1>Q 9

Electric conduction in a semiconductor takes place due to

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Alpha Question Bank for Engineering: Physics>Chapter 35 - Semiconductor Devices>Exercise - 1>Q 10

An electric field is applied to a semiconductor. Let the number of charge carries be

n

and the average drift speed be

v

. If the temperature is increased,

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Alpha Question Bank for Engineering: Physics>Chapter 35 - Semiconductor Devices>Exercise - 1>Q 11

The mobility of free electron is greater than that of free holes because