A Bar Magnet Is Held Vertically with Its Upper End

question 31

Multiple Choice

A bar magnet is held vertically with its upper end a little bit below the center of a horizontal metal ring. The upper end of the magnet is its north pole, as shown in the figure. The bar magnet is now dropped. An observer views the ring from above its center. To this observer, how will the induced current in the ring behave as the magnet falls?

• A) The current will flow clockwise and be increasing.
• B) The current will flow clockwise and be decreasing.
• C) The current will flow counter-clockwise and be increasing.
• D) The current will flow counter-clockwise and be decreasing.
• E) The induced current will be zero.

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Definitions:

Unstructured Observation

Unstructured observation is a qualitative research method where the observer records behavior in a natural setting without a predetermined system or criteria.

Pre-identify

The process of recognizing or determining specific characteristics or criteria before initiating a task or study, often used to streamline subsequent processes or analyses.

Kindergarten Student

is a child attending the first year of school, which is typically designed for children five to six years old, prior to entering first grade.

Observer Drift

A situation that occurs when at some point in the observation process the criteria the rater is using to respond to each item changes.