A Horizontal Straight Wire Carries a Current from East to West

question 46

Multiple Choice

A horizontal straight wire carries a current from east to west. The resulting magnetic field lines are

• A) straight lines perpendicular to the wire.
• B) parallel to the wire from west to east.
• C) parallel to the wire from east to west.
• D) closed circles perpendicular to the wire directed counterclockwise as viewed from the east.
• E) closed circles perpendicular to the wire directed clockwise as viewed from the east.

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Definitions:

Demand Curve

A graphical representation of the relationship between the price of a good or service and the quantity of that good or service that consumers are willing and able to purchase.

Income Effect

A change in the demand for goods or services attributed to a change in consumers’ income.

Substitution Effect

An economic principle describing how changes in the price of goods lead consumers to replace these goods with cheaper alternatives, affecting the quantity demanded.

Indifference Curve

An illustration representing a consumer's preference equilibrium between two products, indicating no preference difference.