An LED Does Not Light

question 16

Multiple Choice

An LED does not light. A voltmeter indicates 0 volts across the LED. All of the following can be the cause EXCEPT:

• A) Current-limiting resistor is open.
• B) The LED is open.
• C) Short to ground between the current-limiting resistor and the LED.
• D) Open ground circuit.

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Definitions:

Primacy Effect

The tendency to remember information at the beginning of a list better than the information that follows.

Halo Effect

A cognitive bias in which the perception of one positive characteristic of a person influences the overall perception of them as favorable.

Phi Phenomenon

An optical illusion of perceived motion created by the rapid succession of images or objects.

Recency Effect

The tendency to remember the most recently presented information best, compared to earlier information.