Discussion
What does the Miller effect do to a collector-base capacitance?
Answer: D
Because the collector swings in antiphase to the base, the capacitance carries far more current than the base voltage alone would drive through it, and appears at the input multiplied by one plus the voltage gain. A few picofarads across a gain of two hundred becomes hundreds of picofarads. It is not divided, not placed in series, and remains a capacitance. That a small component becomes the dominant one through the gain around it is the central fact of high-frequency amplifier design.
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