When a Switch Is Turned On, the Electric Circuit

question 129

Multiple Choice

When a switch is turned on, the electric circuit

• A) is closed
• B) does not allow electrons to flow
• C) is opened
• D) none of these

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Definitions:

Positron Emission Tomography

An imaging test that uses a radioactive substance to visualize and measure metabolic processes in the body.

Nuclear Imaging

A diagnostic technique that uses small amounts of radioactive materials to create detailed images of the organs and structures inside the body.

Electroencephalography

A diagnostic method that records the electrical activity of the brain to identify abnormalities.

Myelinated

Refers to nerve fibers that are covered with a fatty substance called myelin, which increases the speed at which electrical signals (nerve impulses) are passed along the nerve.