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Discussion :: Communication Systems

  1. In a system an input resistance of 20 kΩ causes a noise voltage of 15μV. If two such input resistances each of 20 kΩ are used in parallel, the total noise voltage will be about

    2. A.
    15 μV
    B.
    30 μV
    C.
    7.5 μV
    D.
    10.6 μV

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    Answer : Option D

    Explanation :

    Overall resistance = 10 kW. Noise voltage = (15) = 10.6 μV.

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