three identical amplifiers with each one having a voltage gain of 50, input resistance of 1 kω and output resistance of 250 ω are cascaded. the open circuit voltage gain of the combined amplifier. a. 49 db b. 51 db c. 98 db d. 102 db
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An amplifier without feedback has a voltage gain of 50, input resistance of 1 KΩ ... gain of the combined amplifier is a. 49 dB b. 51 dB c. 98 dB d. 102 dB.
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