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E6F03:What is the most common configuration of an optoisolator or optocoupler?

E6F03E6F

What is the most common configuration of an optoisolator or optocoupler?

Direct answer summary (2024-2028 NCVEC pool)

The official correct answer for E6F03 is An LED and a phototransistor.

The key fact is An LED and a phototransistor. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.

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