The Electric Field at Point $P$ Due to a Point Charge $Q$

question 75

Multiple Choice

The electric field at point $P$ due to a point charge $Q$ a distance $R$ away from $P$ has magnitude $E$ . In order to double the magnitude of the field at $P$ , you could

• A) double the distance to \(2 R\).
• B) double the charge to \(2 Q\) and at the same time reduce the distance to \(R / 2\).
• C) reduce the distance to \(R / 4\).
• D) double the charge to \(2 Q\).
• E) reduce the distance to \(R / 2\).

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Definitions:

Cerebral Cortex

The external covering of the cerebrum in the brain, responsible for intricate brain activities such as thinking, remembering, and awareness.

Forebrain

The anterior part of the brain that includes the cerebrum, responsible for complex cognitive, emotional, sensory, and motor functions.

Reticular Formation

A complex network of nerve pathways in the central nervous system that plays a key role in controlling arousal and consciousness.

Central Nervous System

The complex of nerve tissues that controls the activities of the body, comprising the brain and spinal cord.