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The units of voltage gain is

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The units of voltage gain is

(a) It has no units, it is a ratio

(b) Decibels (db)

(c) All of the mentioned

(d) None of the mentioned

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My enquiry is from Amplifiers topic in chapter Signals and Amplifiers of Electronic Devices & Circuits

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The correct option is (a) It has no units, it is a ratio

Explanation: Voltage gain (Vo) = output voltage/input voltage (Vi). It is also expresses as 20 log (Vo/Vi) db.

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