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CSE · Paper II · Solid State & Devicescse-2017-subject-08-006

Common-emitter amplifier — UPSC Physics Optional CSE 2017 Paper II

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Physics Diagram q-8-079-fig-1

An amplifier in common-emitter configuration is shown in the above figure. If the current gain \beta=100 and the a.c. emitter resistance =25.0\,\Omega, determine the input impedance and the voltage gain of the amplifier:

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