If three amplifiers having the same bandwidth are cascaded, the bandwidth of the resulting amplifier will be
- A. Better than that of each stage
- B. Worse than that of each stage
- C. Same as that of each stage
- D. None of the above
Answer: B. Worse than that of each stage
Explanation: Cascading n identical non-interacting amplifier stages reduces overall bandwidth: BWcascade = BWstage × √(2^(1/n) − 1). For n = 3, BWcascade ≈ 0.51 BWstage (worse than each stage).