a-pure-germanium-crystal-has-a-resistivity-of-060-m-and-25-1013-electronscm3-at-

Question

A pure germanium crystal has a resistivity of 0.60 Ω•m and 2.5 × 10¹³ electrons/cm³ at 20 °C. i) Determine the mean free time for germanium at this temperature. ii) The mean free time for germanium is greater than the mean free time for some conducting materials. Give a reason for the high resistivity of germanium relative to conductors.

Accepted Answer

i. 2.37 × 10^-12 s; ii. Germanium has a low concentration of charge carriers.

Answer

i. 2.33 × 10^-12 s; ii. Resistivity is inversely proportional to mean free time.

Answer

i. 2.33 × 10^-20 s; ii. Germanium has a low concentration of charge carriers.

Answer

i. 2.37 × 10^-20 s; ii. Resistivity is inversely proportional to mean free time.

My Courses

Chemistry

Biology

Math

Physics

Business

Social Sciences

Programming

Product & Marketing