Four Equal Negative Point Charges Are Located at the Corners

question 3

Multiple Choice

Four equal negative point charges are located at the corners of a square, their positions in the xy-plane being (1, 1) , (-1, 1) , (-1, -1) , (1, -1) . The electric field on the x-axis at (1, 0) points in the same direction as

• A) .
• B) .
• C) -
• D) .
• E) - .

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Definitions:

Capillary Action

The ability of a liquid to flow in narrow spaces without the assistance of, and in opposition to, external forces like gravity.

Hydrogen Bonds

Weak bonds between molecules or within molecules due to the attraction between a hydrogen atom and a more electronegative atom.

Adhesive Forces

The attractive forces between unlike molecules that cause them to cling to one another.

Oxidizing Agent

A substance that gains electrons and thereby causes another substance to be oxidized in a chemical reaction.