A Copper Wire of Length 10 Cm Is in a Magnetic

question 29

Multiple Choice

A copper wire of length 10 cm is in a magnetic field of 0.30 T.If it has a mass of 20 g,what minimum current through the wire would cause a magnetic force equal to its weight?

• A) 4.9 A
• B) 6.5 A
• C) 2.0 A
• D) 1.3 A

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Definitions:

Fixed Action Pattern

A sequence of innate, unchangeable behaviors that is triggered by a specific stimulus and will be carried out to completion once started.

Action Specific Energy

A concept in ethology suggesting that certain behaviors build up energy within an organism, which then seeks release through specific actions.

Instinctive Behaviors

Innate, fixed patterns of response to stimuli that are not learned and are common to all members of a species.

Conditioning Experience

The process through which an association between two stimuli or a behavior and a stimulus is learned.