In a Circular Loop of Wire Lying on a Horizontal

question 7

Multiple Choice

In a circular loop of wire lying on a horizontal floor,the current is constant and,to a person looking downward,has a clockwise direction.The accompanying magnetic field at the center of the circle is directed

• A)horizontally and to the east.
• B)horizontally and to the north.
• C)vertically upward.
• D)parallel to the floor.
• E)vertically downward.

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Definitions:

Optic Nerve

A bundle of more than a million nerve fibers that transmit visual signals from the eye to the brain.

Vitamin A

A fat-soluble vitamin essential for growth, immune function, eye health, and skin maintenance.

Retinex Theory

A theory explaining color vision based on the processing of visual information as a way of estimating the colors and brightness of objects under different lighting conditions.

Apparent Color

The color of an object as it is perceived by the human eye, which can differ under varying lighting conditions.