A negative charge is released from rest in a region between two plates of opposite sign. Which one is correct?

Question

BlackTom AI · Accepted Answer

A negative charge released from rest in a region between two oppositely charged plates will experience a force due to the electric field created by the plates. 
Option a: 'The field is directed toward the positive plate.' In a parallel-plate capacitor, the electric field points from the positive plate to the negative plate. Therefore, this statement is incorrect because the field direction is from + to −, not toward the positive plate itself. 
Option b: 'The velocity of the particle is directed toward the negative plate.' Since the charge starts at rest, its velocity changes due to the electric force. For a negative charge, the force is opposite to the field, so it accelerates toward the positive plate; thus this statement is false. 
Option c: 'The acceleration is directed toward the positive plate.' This is the correct conclusion: the electric force on a negative charge points toward the positive plate, giving acceleration in that direction regardless of the initial motion (which is zero at release). 
Option d: 'The force is directed toward the negative plate.' This reverses the actual direction; the force on a negative charge is toward the positive plate, not toward the negative plate, so this is incorrect. 
In summary, only option c correctly describes the direction of acceleration for a negative charge released between oppositely charged plates; all other statements misstate the field, velocity, or force directions.

UCIC 202503 PHYS101 Quiz 9

A negative charge is released from rest in a region between two plates of opposite sign. Which one is correct?

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UCIC 202503 PHYS101 Quiz 9

A negative charge is released from rest in a region between two plates of opposite sign. Which one is correct?

查看解析

登录即可查看完整答案

类似问题

A rod with an unknown charge attracts a plastic ball. Which of the following is possible?

​Lightning results from electrical charge differences ____.

Which one is the correct statement regarding the directions of the electric forces?

In the Coulomb’s Law formula, what do the symbols F, q, and r, mean respectively?

Which one indicates the correct interactions between different charges and neutral object?

Which one indicates the correct interactions between different charges?

In electrostatic equilibrium, the excess electric charge on an irregularly shaped conductor is

两个带电粒子以大小F的力相互吸引。如果一个粒子的电荷加倍，粒子间距也加倍，则作用于这两个粒子的力大小为

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单

Lightning results from electrical charge differences ____.