A Rigid Circular Loop Has a Radius of 0

question 15

Multiple Choice

A rigid circular loop has a radius of 0.20 m and is in the xy-plane. A clockwise current I is carried by the loop, as shown. The magnitude of the magnetic moment of the loop is 0.75 A ∙ m². A uniform external magnetic field, B = 0.20 T in the positive x-direction, is present. An external torque changes the orientation of the loop from one of lowest potential energy to one of highest potential energy. The work done by this external torque is closest to

• A) 0.20 J
• B) 0.30 J
• C) 0.40 J
• D) 0.50 J
• E) 0.60 J

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Definitions:

Telepathy

The claimed ability to communicate thoughts or information from one mind to another without using known sensory channels.

Psychics

Individuals who claim to possess extraordinary abilities to perceive information hidden from the normal senses, often involving telepathy or clairvoyance.

Retinal Disparity

A visual depth cue resulting from the slightly different images produced by each of our eyes due to their horizontal separation.

Depth Perception

The ability to perceive the distance of an object and the three-dimensional characteristics of objects.