#### Question

The mobility of holes is 0.025m^{2 }/V-sec. what would be the resistivity of n- type Si if the Hall coefficient of the sample is 2.25× 10^{-5}m^{3}/C.

#### Solution

:-Given Data :-μ_{h}=0.025m^{2} /V-sec R_{H}=2.25×10^{-5}m^{3 }/C

Formula :-ρ=` 1/σ , μ_h =σR_H`

Calculations :- `σ=μ_H/R_H =0.025/ 2.25×10^(-5)=1111.11mho⁄m`

ρ=9×10Ω ^{-4 }-m

Answer:- Resistivity=9×10^{-4} Ω-m

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Solution The mobility of holes is 0.025m2 /V-sec. what would be the resistivity of n- type Si if the Hall coefficient of the sample is 2.25× 10-5m3/C. Concept: Conductivity, mobility, current density (drift & diffusion) in semiconductors(n type and p type).