The purpose of a coupling capacitor in a transistor amplifier is to ___________________?
Correct answer: C. Pass a.c. and block d.c.
- A. Increase the output impedance of transistor
- B. Protect the transistor
- C. Pass a.c. and block d.c.
- D. Provide biasing
Explanation
A coupling capacitor transfers the varying a.c. signal from one amplifier stage to the next while preventing the d.c. bias voltage of one stage from disturbing the other. It therefore passes a.c. and blocks d.c.
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