A Light Emitting Diode Emits Light When

question 11

Multiple Choice

A light emitting diode emits light when:

• A)electrons are excited from the valence to the conduction band
• B)electrons from the conduction band recombine with holes from the valence band
• C)electrons collide with atoms
• D)electrons are accelerated by the electric field in the depletion region
• E)the junction gets hot

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Definitions:

Somatic Nervous System

The part of the peripheral nervous system responsible for carrying sensory and motor information to and from the central nervous system.

Visual Cortex

The part of the brain responsible for processing visual information received from the eyes.

Thalamus

A brain structure that acts as a relay station for sensory and motor signals to the cerebral cortex, with the exception of olfactory signals.

Amygdala

A part of the limbic system within the brain that is involved in emotions, decision-making, and memory processing.