A Square Loop of Wire Moves with a Constant Speed

question 34

Multiple Choice

A square loop of wire moves with a constant speed v from a field-free region into a region of uniform B field, as shown. Which of the five graphs correctly shows the induced current i in the loop as a function of time t?

• A) I
• B) II
• C) III
• D) IV
• E) V

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Definitions:

Pitch Cone

In gear design, it is the imaginary cone that represents the underlying angular surface of the teeth, where the pitch surface of an infinitely small gear would be.

Conical Surface

A surface that extends outward and away in all directions from a common point, resembling the shape of a cone.

Frustum

A truncated shape that results from cutting a pyramid or cone with a plane parallel to its base, leaving two bases, one smaller than the other.

Pitch Angle

The angle between the helix of a thread or gear on a cylindrical shaft and an imaginary line perpendicular to the shaft's axis.