A Magnetic Field Is Produced by

question 45

Multiple Choice

A magnetic field is produced by

• A)electric charges at rest.
• B)electric charges in motion.
• C)permanent magnets only.
• D)electric charges both at rest and in motion.

---

Definitions:

Pneumonia

A respiratory condition characterized by inflammation of the lung tissue, often caused by infection with viruses, bacteria, or other organisms.

Cartilage-Reinforced Walls

Structural components strengthened by cartilage, often found in certain types of anatomical structures to provide support and flexibility.

Bronchiole

A small airway that leads from a bronchus to alveoli.

Nasal Cavity

The nasal cavity is the large air-filled space behind the nose, involved in breathing and smelling, filtering, warming, and moistening the air breathed in.