Question 84Electricity & Electronics - QMED

The correct answer is B) no illumination. A burned-out LED would indicate a complete failure of the LED, resulting in no illumination or output from the LED. This is because a burned-out LED has an open circuit, preventing any current from flowing through it and causing it to stop emitting light. The other answer choices are incorrect because: A) Excessive output is not an indication of a burned-out LED, as a burned-out LED would produce no output at all. C) Excessive illumination is also not an indication of a burned-out LED, as a burned-out LED would produce no illumination. D) A slight glow in the crystal is not a typical indication of a burned-out LED, as a burned-out LED would produce no illumination at all.