Two Identical Pith Balls Supported by Insulating Threads Hang Side

question 60

Multiple Choice

Two identical pith balls supported by insulating threads hang side by side and close together, as shown below. One is positively charged; the other is neutral. We can conclude that

• A) all field lines leaving the positively charged pith ball end on the neutral pith ball.
• B) some of the field lines leaving the positively charged pith ball end on the neutral pith ball.
• C) none of the field lines leaving the positively charged pith ball end on the neutral pith ball.
• D) positive charge is transferred along the field lines until both balls have equal charges.
• E) positive charge is transferred along the field lines until both balls hang along vertical lines.

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Definitions:

Smooth ER

The smooth endoplasmic reticulum is a membrane-enclosed organelle found in eukaryotic cells, involved in lipid synthesis, detoxification, and calcium ion storage.

Phospholipids

A type of lipid molecule that forms the primary component of all cell membranes, consisting of two fatty acids and a phosphate group attached to glycerol.

Cell Membranes

Cell membranes are thin, flexible barriers that surround cells, regulating the passage of substances in and out of the cell, and providing structural support.

Vacuoles

Membrane-bound organelles in cells, particularly plant cells, which are involved in storage and maintenance of cellular homeostasis.