Mobilities of electrons and holes in a sample of intrinsic germanium at room temperature are $$0.36$$ $$m2/Vs$$ and $$0.17$$ $$m2/Vs$$. The electron and hole densities are each equal to $$2.5$$×$$1019m$$−$$3$$. Electrical conductivity of Germanium is

Question

Mobilities of electrons and holes in a sample of intrinsic germanium at room temperature are $$0.36$$ $$m2/Vs$$ and $$0.17$$ $$m2/Vs$$. The electron and hole densities are each equal  to  $$2.5$$×$$1019m$$−$$3$$. Electrical conductivity of Germanium is

Infinity Learn · Accepted Answer

μ$$e=0.36$$ $$m2/Vs$$μ$$h=0.17$$ $$m2/Vsne=nh=2.5$$×$$1019$$ m−$$3$$σ$$=$$?Conductivity , σ$$=nee$$μ$$e+nhe$$μh⇒σ$$=e(ne$$μ$$e+nh$$μ$$h)$$⇒σ$$=1.6$$×$$10$$−$$19(2.5$$×$$1019$$×$$0.36+2.5$$×$$1019$$×$$0.17)$$⇒σ$$=1.6$$×$$10$$−$$19$$×$$2.5$$×$$1019(0.36+0.17)$$⇒σ$$=1.6$$×$$2.5(0.53)$$⇒σ$$=2.12$$

Mobilities of electrons and holes in a sample of intrinsic germanium at room temperature are $0.36 m^{2} / Vs$ and $0.17 m^{2} / V s$ . The electron and hole densities are each equal to $2.5 \times 10^{19} m^{- 3}$ . Electrical conductivity of Germanium is

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

Mobilities of electrons and holes in a sample of intrinsic germanium at room temperature are 0.36 m2/Vs and 0.17 m2/Vs. The electron and hole densities are each equal to 2.5×1019m−3. Electrical conductivity of Germanium is

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

Mobilities of electrons and holes in a sample of intrinsic germanium at room temperature are $0.36 m^{2} / Vs$ and $0.17 m^{2} / V s$ . The electron and hole densities are each equal to $2.5 \times 10^{19} m^{- 3}$ . Electrical conductivity of Germanium is