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:

Asexual Lineages

Populations or species that reproduce without the genetic recombination processes involved in sexual reproduction.

Antagonistic Coevolution

The evolutionary relationship between two species, in which changes in the genetic composition of one species drive reciprocal changes in the genetic composition of the other.

Water Striders

Aquatic insects that are able to walk on the surface of water by distributing their weight over their long legs.

Exaggerated Grasping Structures

Physical adaptations in organisms that allow for improved ability to grasp or hold objects, often seen in limbs or appendages.