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

Question

BlackTom AI · Accepted Answer

To analyze the scenario, I’ll first restate what the setup implies: a rod with an unknown charge is attracting a plastic ball. This implies the attraction is due to opposite charges between the rod and the ball.
Option 1: The rod is negative and the ball is positive. Opposite charges attract, so this pairing would produce the observed attraction. This is consistent with the phenomenon described.
Option 2: The rod is uncharged and the ball is uncharged. If both are truly uncharged, there would be no electrostatic attraction due to charge; any attraction would have to come from a different effect (not described here), so this option fails to explain the given attraction.
Option 3: The rod is positive and the ball is positive. Like charges repel, which would lead to repulsion, not attraction, making this option incompatible with the scenario.
Option 4: The rod is negative and the ball is negative. Again, like charges repel, so this arrangement would not produce attraction, contradicting the observed effect.
In summary, only the charge arrangement with opposite signs (negative rod, positive ball) accounts for the attraction described, while the others either yield no interaction or produce repulsion rather than attraction.

APPHYSC142-031 with labs Exam Review - Final

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

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APPHYSC142-031 with labs Exam Review - Final

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

查看解析

登录即可查看完整答案

类似问题

​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?

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

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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 ____.