When You Flip a Switch to Turn on a Light

question 91

Multiple Choice

When you flip a switch to turn on a light, the delay before the light turns on is determined by:

• A) the speed of the electric field moving in the wire.
• B) the drift speed of the electrons in the wire.
• C) the number of electron collisions per second in the wire.
• D) none of these, since the light comes on instantly.

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Definitions:

Liver

The largest gland in the body; it aids digestion by producing bile, regulates organic components of the blood, and acts as a detoxifier of blood.

Thymus

An organ located near the heart that secretes thymosin and thus processes and activates T-cells.

Allergic Reactions

Adverse and sometimes severe responses of the immune system to foreign substances, such as certain foods, pollen, or medications.

Immune System Reaction

The response of the immune system to foreign substances or pathogens, aiming to protect the body from infection or disease.