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bhanesh
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What is thermal noise voltage of three resisors connected in series
bhanesh said:What is thermal noise voltage of three resisors connected in series
arunsjunk said:
Thermal noise voltage is a type of random electrical noise that is caused by the thermal agitation of electrons in a conductor. It is also known as Johnson-Nyquist noise or white noise.
The thermal noise voltage of a resistor can be calculated using the equation Vn = √(4kBTR), where Vn is the thermal noise voltage, kB is Boltzmann's constant, T is the temperature in Kelvin, and R is the resistance of the resistor in ohms.
Thermal noise voltage increases with temperature because as the temperature increases, the agitation and movement of electrons within the conductor also increases, resulting in a higher level of random noise.
When multiple resistors are connected in series, the thermal noise voltage increases with each additional resistor. This is because the overall resistance of the circuit increases, resulting in a larger thermal noise voltage.
Thermal noise voltage can be reduced by using resistors with lower resistance values, as well as by cooling the circuit to decrease the temperature and thus reduce the movement of electrons. Additionally, using resistors with higher quality materials can also help to reduce thermal noise voltage.