A Circular Coil of Wire of 200 Turns and Diameter

question 42

Multiple Choice

A circular coil of wire of 200 turns and diameter 2.0 cm carries a current of 4.0 A.It is placed in a magnetic field of with the plane of the coil making an angle of 30° with the magnetic field.What is the magnetic torque on the coil?

• A) 0.15 N • m
• B) 0.088 N • m
• C) 0.29 N • m
• D) 0.40 N • m
• E) 0.076 N • m

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Definitions:

Confederates

In experimental psychology, individuals who seem to be participants but are actually part of the research team, used to manipulate social interactions as part of the experiment.

Experimental Group

In an experiment, this group is exposed to the variable being tested, contrasting with the control group, which is not exposed to the variable.

Independent Variable

In experimental and research settings, the variable that is manipulated to observe its effects on a dependent variable.

Internal Validity

The degree to which a study establishes a trustworthy cause-and-effect relationship between a treatment and an outcome.