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T6B07:What causes a light-emitting diode (LED) to emit light?

T6B07T6B

What causes a light-emitting diode (LED) to emit light?

Direct answer summary (2026-2030 NCVEC pool)

The official correct answer for T6B07 is Forward current.

The key fact is Forward current. 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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More questions in T6B

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