A Positive Point Charge Q Is Placed at the Center

question 59

Multiple Choice

A positive point charge q is placed at the center of an uncharged metal sphere insulated from the ground. The outside of the sphere is then grounded as shown. Then the ground wire is removed. A is the inner surface and B is the outer surface. Which statement is correct?

• A) The charge on A is −q; that on B is +q.
• B) The charge on B is −q; that on A is +q.
• C) The charge is on A and on B.
• D) There is no charge on either A or B.
• E) The charge on A is −q; there is no charge on B.

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Definitions:

Granules

Small particles or grains, often referring to microscopic structures within cells that contain enzymes and other substances.

Open Circulatory System

A type of circulatory system where blood is not always contained within blood vessels but flows freely through cavities in the body, facilitating exchange of nutrients and waste with cells.

Blood Vessels

The tubes in the body through which blood flows, including arteries, veins, and capillaries, responsible for transporting oxygen, nutrients, and waste products.

Hemoglobin

This substance within red blood cells facilitates the movement of oxygen from the lungs to various body tissues and the return transport of carbon dioxide to the lungs.