The Magnetic Field Due to a 2-A Current Flowing in a Long

question 39

Multiple Choice

The magnetic field due to a 2-A current flowing in a long, straight wire is 8 μT at a point P, a certain distance away from the wire. How far is this point from the center of the wire?

• A) 2 cm
• B) 3 cm
• C) 4 cm
• D) 5 cm
• E) 6 cm

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Definitions:

Chest Tube

A medical device inserted through the chest wall to remove air, fluid, or pus from the pleural space, helping the lungs to expand properly.

Water-Seal Chamber

A component of a chest tube drainage system that prevents air from re-entering the patient’s pleural space and allows trapped air and fluid to escape from the chest.

Continuous Bubbling

Often observed in certain medical devices or procedures, indicating a steady flow of air or gas through a liquid, which may be normal or indicative of a problem.

Sleep Apnea

Cessation of breathing for a time during sleep.