Electronics and Communication Engineering - Radio Receivers - Discussion

Discussion Forum : Radio Receivers - Section 1 (Q.No. 1)
The noise generated by a resistor depends upon
its resistance value
its operating temperature
both its resistance value and operating temperature
none of the above
Answer: Option
No answer description is available. Let's discuss.
11 comments Page 1 of 2.

Giri prasath said:   10 years ago
Temperature is directly proportional to the Noise created by resistor.

Naveen said:   10 years ago
Because it has linear characteristics if noise created it would not effect resistor value.

Mad said:   9 years ago
As temperature increases energy of electrons increases, then random motion of electrons increases causing noise.

Arun kumar said:   9 years ago
Power losses is directly proportional to temperature increases.

Cslohumi said:   8 years ago
Noise generated by resistors results from the motion of electrons within the resistor.

The noise power is proportional to the bandwidth.
Then, V = square root (4 kTBR).

Prathyusha Chowdary musunuri said:   8 years ago
Noise is directly proportional to the bandwidth of a signal and absolute temperature.

Naresh said:   7 years ago
V = square root (4 kTBR).

So, noise proportional to both R, T, B.

Shaik ejaz said:   7 years ago
If the resistance is high then heat dissipation also high. High heat will effect the signal also signal strength will be decreases.

Bhupender said:   7 years ago
I agree @Naresh.

Noise should depend on resistance value as well as evident from the formula. Otherwise, there will be no difference between metals and non-metals.

RAJIVE said:   6 years ago
Also on frequency of operation.

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