Extra exam question E7G01
Subelement E7, PRACTICAL CIRCUITS· Group E7G
E7G01
What is the typical output impedance of an op-amp?
- A.Very low (correct answer)
- B.Very high
- C.100 ohms
- D.10,000 ohms
WhyAn op-amp typically has very low output impedance. An op-amp typically has a very low output impedance, letting it drive a load without the output voltage sagging significantly under load, one of the ideal characteristics that makes op-amps so versatile as building blocks, answer A. It isn't very high, and it isn't a fixed figure like 100 or 10,000 ohms, real op-amps are designed to approach a very low output impedance, not a specific moderate value.
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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