Thermal noise voltage and Boltzmann's constant

Q. The rms value of thermal noise voltage is related to Boltzmann's constant k as
- Published on 15 Oct 15

a. V_n is Directly proportional to k²

b. V_n is Directly proportional to k

c. V_n is Directly proportional to √k

d. V_n is Directly proportional to k³

ANSWER: V_n is Directly proportional to √k

Noise voltage V_n is given by
√(4R KTB)

Where, K = 1.381 × 10^-23 J/K, joules per Kelvin, the Boltzmann constant

B is the bandwidth at which the power P_n is delivered.

T noise temperature

R is the resistance

If K is the Boltzmann's constant, the rms value of thermal noise voltage is proportional to √k.

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Thermal noise voltage and Boltzmann's constant

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