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The value of one decibel is equal to?

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in Network Theory by (157k points)
The value of one decibel is equal to?

(a) log10 (N)

(b) 10 log10 (N)

(c) 20 log10 (N)

(d) 40 log10 (N)

This question was posed to me in an interview for internship.

The question is from Attenuators in section Filters and Attenuators of Network Theory

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The correct option is (c) 20 log10 (N)

The explanation is: The value of one decibel is equal to 20 log10 (N). One decibel = 20 log10 (N) where N is the attenuation.

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