Three Equal Charges +Q Are at Three of the Corners

question 91

Multiple Choice

Three equal charges +Q are at three of the corners of a square of side d. A fourth charge +Q of equal magnitude is at the center of the square as shown in the figure Which one of the arrows shown represents the net force acting on the charge at the center of the square?

• A) A
• B) B
• C) C
• D) D

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Definitions:

Polygraph

A device or procedure that measures and records several physiological indicators such as blood pressure, pulse, respiration, and skin conductivity while the subject is asked and answers a series of questions, purportedly to detect lies.

Perspiration

The process by which sweat glands in the skin secrete sweat, a fluid consisting primarily of water along with various dissolved solids, which evaporates to help cool the body.

Food Deprivation

The condition of being withheld from food, leading to hunger or potential starvation.

Instinct

A fixed behavioral response in animals that is instinctual and occurs upon encountering certain stimuli.