Two Large Parallel Conducting Plates Are Separated by a Distance

question 21

Multiple Choice

Two large parallel conducting plates are separated by a distance d, placed in a vacuum, and connected to a source of potential difference V.An oxygen ion, with charge 2e, starts from rest on the surface of one plate and accelerates to the other.If e denotes the magnitude of the electron charge, the final kinetic energy of this ion is:

• A)eV/2
• B)eV/d
• C)eVd
• D)Vd/e
• E)2eV

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Definitions:

Spinal Cord

A major part of the central nervous system which conducts sensory and motor nerve impulses to and from the brain.

James-Lange Theory

A theory proposing that emotions arise from physiological reactions to events.

Cannon-Bard Theory

The Cannon-Bard theory is a psychological model proposing that emotional feelings and physiological reactions to stimuli occur simultaneously and independently.

Arousal Theory

Arousal theory suggests that there is an optimal level of arousal necessary for the best performance of any task; too little or too much arousal can decrease performance efficiency.