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What is the maximum value of gain of an amplifier?(a) 140dB(b) 130dB(c) 120db(d) 100dBI got this question during an interview for a job.My enquiry is from The Junction Field-Effect Transistor topic in section Field-Effect Transistors of Electronic Devices & Circuits

Answer»

Right choice is (c) 120db

The explanation: The maximum GAIN of AMPLIFIER is 1000000. When we CONSIDER this in decibel scale, it gives 120dB => gain in dB = 20log10(100000) = 120dB.



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