73·STUDY

Extra exam question E7B12

Subelement E7, PRACTICAL CIRCUITS· Group E7B

E7B12

What type of amplifier circuit is shown in Figure E7-1?

  • A.Common base
  • B.Common collector
  • C.Common emitter (correct answer)
  • D.Emitter follower

WhyFigure E7-1 shows a common emitter amplifier circuit. Figure E7-1 shows a common emitter amplifier: the input signal enters at the base (through C1), and the output is taken from the collector (through C2), with the emitter resistor R3 providing the bias stabilization typical of this configuration, answer C. It isn't common base (input at the emitter) or common collector/emitter follower (output taken from the emitter instead of the collector).

Schematic E7-1 showing a common-emitter transistor amplifier circuit with labeled resistors R1 and R2 forming the voltage-divider bias network and R3 providing emitter self-bias.

Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.

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