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Materials and Components - Engineering

Q1:

If k is Boltzmann's constant and T is absolute temp, then at room temp.

A kT  0.025 eV

B kT  0.5 eV

C kT  1 eV

D kT  100 eV

ANS:A - kT  0.025 eV

Thermal voltage=(K * T)/Q.
K=boltzmann constant=1.38*10 to power -23.
T= Room temperature=300 kelvin.
Q= charge on one electron= 1.6 * 10 to power -19.

Since the answers are given in eV we have to calculate using above formulae.
Answer= ~0.025eV.