A Wire in the Shape of an "M" Lies in the Plane

question 68

Multiple Choice

A wire in the shape of an "M" lies in the plane of the paper. It carries a current of 2.0 A, flowing from A to E, as shown in the figure. It is placed in a uniform magnetic field of 0.85 T in the same plane, directed as shown on the right side of the figure. The figure indicates the dimensions of the wire. Note that AB is parallel to DE and to the baseline from which the magnetic field direction is measured. What are the magnitude and direction of the force acting on section DE of this wire?

• A)0.30 N perpendicular out of the page
• B)0.12 N perpendicular into the page
• C)0.30 N perpendicular into the page
• D)0.12 N perpendicular out of the page
• E)0.20 N perpendicular out of the page

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Definitions:

Solution

Uniform mixture of solute completely dissolved in solvent.

Table Salt

Common salt used in cooking and food preservation, chemically known as sodium chloride (NaCl).

Water

A transparent, tasteless, odorless, and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans.

Polarity

The property of having distinct and opposite charges or directions.