If a digital multimeter is set up as shown in figures "A" and "B" of the illustration, what is the status of the silicon diode if the display reads OL ohms when configured as in figure "A" and reads OL ohms when configured as in figure "B"? Illustration EL-0211

Correct Answer: Option D — the diode is open

An open diode exhibits infinite resistance in both forward and reverse bias configurations. Displaying an overload (OL) reading in both figure A and figure B proves that the internal semiconductor junction is severed, halting current flow entirely in accordance with standard diagnostic procedures under IEEE 45.