A Metal Rod of Length L Moves with Velocity V

question 46

Multiple Choice

A metal rod of length L moves with velocity v, perpendicular to its length, in a magnetic field B, which is perpendicular to both the rod and its velocity. If the length of the rod is doubled, what happens to the electric field in the rod?

• A) It stays the same.
• B) It doubles.
• C) It quadruples.
• D) It halves.
• E) It quarters.

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Definitions:

Facial Expressions

Movements of the facial muscles that convey emotions, intentions, or reactions nonverbally.

Time

A continuous, measurable quantity in which events occur in a sequence from the past through the present to the future.

Nonverbal Communication

The process of conveying a message without the use of words, through gestures, body language, facial expressions, and other visual cues.

Physical Engagement

The act of participating in activities that require bodily movement or exertion.