Home
Class 12
PHYSICS
What is the conductivity of a semiconduc...

What is the conductivity of a semiconductor (in `Omega^(-1) m^(-1)`) if electron density `= 5 xx 10^(12) cm^(-3)` and hole density `= 8 xx 10^(13) cm^(-3)`?
`(mu_(e) = 2.3 V^(-1) s^(-1)m^(2), mu_(h) = 0.01 m^(2) V^(-1) s^(-1))`

A

`5.634 Omega^(-1) m^(-1)`

B

`1.968Omega^(-1)m^(-1)`

C

`3.421Omega^(-1)m^(-1)`

D

`8.964Omega^(-1)m^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

What is the conductivity of a semiconductor sample having electron concentration of 5 xx 10^(18) m^(-3) hole concentration of 5 xx 10^(19) m^(-3) , electron mobility of 2.0 m^(2) V^(-1) s^(-1) and hole mobility of 0.01 m^(2) V^(-1) s^(-1)? (Take charge of electron as 1.6 xx 10^(-19)C)

What is the conductivity of a semiconductor sample having electron concentration of 5 xx 10^(18) m^(-3) hole concentration of 5 xx 10^(19) m^(-3) , electron mobility of 2.0 m^(2) V^(-1) s^(-1) and hole mobility of 0.01 m^(2) V^(-1) s^(-1)? (Take charge of electron as 1.6 xx 10^(-19)C)

What is the uncertainty in velocity of an electron if the uncertainty in its position is 10^(-10) m ? Mass of the electron is 9.1 xx 10^(-31) kg and h = 6.6 xx 10^(-34) m^(2) s^(-1) ?

What is the uncertainty in velocity of an electron if the uncertainty in its position is 10^(-10) m ? Mass of the electron is 9.1 xx 10^(-31) kg and h = 6.6 xx 10^(-34) m^(2) s^(-1) ?

Calculate the conductivity for a wire of length 60 cm with current density 1xx10^(-7) and potential difference of 3V .

Calculate the resistivity of an n-type semiconductor from the following data:density of conduction electrons =8xx10^13cm^(-3) ,density of holes =5xx10^12cm^(-3), mobility of conduction electron =2.3xx10^(4)cm^(2)V_(-1)s_(-1) and mobility of holes =100cm^(2)V_(-1)s_(-1 ).

A block of pure silicon at 300 K has a length of 10 cm and an area of 1.0 cm^(2) . A battery of emf 2V is connected across it. The mobility of electron is 0.14 m^(2) v^(-1) S^(-1) and their number density is 1.5 xx 10^(16) m^(-3) . The mobility of holes is 0.05 m^(2) v^(-1) S^(-1) . The electron current is

The rms velocity molecules of a gas of density 4 kg m^(-3) and pressure 1.2 xx 10^(5) N m^(-2) is

The rms velocity molecules of a gas of density 4 kg m^(-3) and pressure 1.2 xx 10^(5) N m^(-2) is

The conductivity of 0.01 mol L^(-1) KCl solution is 1.41xx10^(-3)" S "cm^(-1) . What is the molar conductivity ( S cm^(2) mol^(-1) ) ?