Three Equal Negative Point Charges Are Placed at Three of the Corners

question 15

Multiple Choice

Three equal negative point charges are placed at three of the corners of a square of side d as shown in the figure.Which of the arrows represents the direction of the net electric field at the center of the square?

• A)A
• B)B
• C)C
• D)D
• E)The field is equal to zero at point P.

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Definitions:

Somatic System

Part of the peripheral nervous system that handles voluntary control of body movements through the control of skeletal muscles.

Autonomic System

A part of the peripheral nervous system that controls involuntary bodily functions such as heartbeat, digestion, and breathing.

CNS

Central Nervous System, the part of the nervous system consisting of the brain and spinal cord, which integrates and coordinates bodily functions.

Event-Related Potentials

Brain waves measured by EEG that are the direct result of a specific sensory, cognitive, or motor event, useful in the study of cognitive processes.