The final stage of a multistage amplifier uses______________?
Correct answer: B. Transformer coupling
- A. RC coupling
- B. Transformer coupling
- C. Direct coupling
- D. Impedance couplingLearn Quantum Physics
Explanation
The final stage usually drives a low-resistance load, so transformer coupling is used for impedance matching and efficient power transfer. RC coupling is more typical of voltage-amplifier stages.
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