An amplifier operating over a frequency range of 18 to 20 MHz has 10 kΩ input resistance. At a temperature of 27° C, the noise voltage at input of amplifier is (Boltzman constant k = 1.38 x 10-23 J/K)-A-18.2 μVB-182 μVC-16.2 μVD-162 μV-A-18.2 μV

Question

An amplifier operating over a frequency range of 18 to 20 MHz has 10 k&Omega; input resistance. At a temperature of 27&deg; C, the noise voltage at input of amplifier is (Boltzman constant k = 1.38 x 10-23 J/K)-A-18.2 &mu;VB-182 &mu;VC-16.2 &mu;VD-162 &mu;V-A-18.2 &mu;V

APTITUDE CRACK · Accepted Answer

The correct option is  A 18.2 &mu;V Using Equation Va = (4 x 1.38 x 10 23 x 300 x 2 x 106 x 104)0.5 = 18.2 x 10 6 V.

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Q1: An amplifier operating over a frequency range of 18 to 20 MHz has 10 kΩ input resistance. At a temperature of 27° C, the noise voltage at input of amplifier is (Boltzman constant k = 1.38 x 10^-23 J/K)

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Communication Systems

Q1: An amplifier operating over a frequency range of 18 to 20 MHz has 10 kΩ input resistance. At a temperature of 27° C, the noise voltage at input of amplifier is (Boltzman constant k = 1.38 x 10-23 J/K)

Solution

For help Students Orientation Mcqs Questions

Q1: An amplifier operating over a frequency range of 18 to 20 MHz has 10 kΩ input resistance. At a temperature of 27° C, the noise voltage at input of amplifier is (Boltzman constant k = 1.38 x 10^-23 J/K)

For help Students Orientation
Mcqs Questions