A Velocity Selector for Ions Uses Perpendicular Electric and Magnetic

question 26

Multiple Choice

A velocity selector for ions uses perpendicular electric and magnetic fields. If the electric field used were 800 V/m, what magnetic field would allow the selection of a velocity of 4000 m/s?

• A) 0.0400 T
• B) 0.0800 T
• C) 0.160 T
• D) 0.200 T
• E) 0.500 T

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Definitions:

Needle Biopsy

A procedure where a small sample of tissue is taken from the body using a thin needle for examination, often to diagnose diseases like cancer.

Aspiration

The act of inhaling a foreign object or substance into the airway or lungs, or a strong desire or ambition for achievement.

Sterile Technique

A set of practices designed to minimize the presence of pathogens and reduce the likelihood of infection.

Infection

The invasion and multiplication of microorganisms in body tissues, which can cause disease or illness.