Multiple choice

The silicon sample with unit cross-sectional area shown below is in thermal equilibrium. The following information is given: T=300K, electronic charge=1.6x10-19C, thermal voltage=26mV and electron mobility = 1350cm2/V-s

The magnitude of the electric field at x = 0.5 $\mu$m is

  1. 1kV/cm

  2. 5kV/cm

  3. 10 kV/cm

  4. 26kV/cm

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sample is in thermal equilibrium so, electric field

$E = \dfrac{1}{1\mu m} = 10 \ kV/cm$