Thermal noise is also known as

Thermal noise is also known as


a) Johnson noise
b) Partition noise
c) Flicker noise
d) Solar noise

Correct Answer: Johnson noise


Thermal noise is also known as Johnson noise or White noise. It is the random noise generated in resistive components due to rapid and random motion of atoms or electrons. Johnson noise is named after the scientist J.B. Johnson. Thermal noise contains all frequency components in equal amount. The white noise has infinite average power and is not physically attainable but it has suitable mathematical properties so it is used for system analysis in most of the systems.
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