题目
题目

UCIC 202503 PHYS101 Quiz 9

单项选择题

What is r in the formula V = ke q/r?

选项
A.a. The distance from a charge to a point where the electric potential is to be calculated
B.b. The radial quantity of the electric potential energy in an electric charge inside an electric field
C.c. The rotational velocity of the moving charge which causes an electric potential
D.d. The radius of the charge that contributes to the electric potential to be calculated
题目图片
查看解析

查看解析

标准答案
Please login to view
思路分析
Question: What is r in the formula V = k_e q / r? Option a: The distance from a charge to a point where the electric potential is to be calculated - This is correct. In the expression for electric potential due to a point charge, V = k_e q / r, r represents the straight-line distance between the charge and the point at which the potential is being evaluated. It is a spatial separation, not a property of the charge itself, and it determines how the potential diminishes with distan......Login to view full explanation

登录即可查看完整答案

我们收录了全球超50000道考试原题与详细解析,现在登录,立即获得答案。

类似问题

Imagine an electric charge  is placed at a point  in an electric field of a charge . An external force acts on the charge  and moves it from point  to point . The displacement from point  to point  is . The work done by the external force on the charge : (select all that apply)

The charges q1 = 1.7 ´ 10–5 C, q2 = –1.9 ´ 10–4 C, and q3 = –3.7 ´ 10–4 C, are placed at the corners of the triangle shown below with a = 3 m, b = 3 m.  What is the absolute value of the potential at the location of the point charge q1? Use a value of 9 ´ 109 N.m2/C2 for Coulomb's constant, k.  Write your answer in the units of mega-volt (MV) to the nearest third decimal place, e.g. 6.327 Do not include units in your answer; just write the numerical value.  Please note: 1 MV = 106 V

If the potential due to a point charge is 709 V at a distance of 11.8 m, what is the magnitude of the charge? Use a value of 9.00x109 N.m2/C2 for Coulomb's constant, k.  Write your answer in the units of micro-coulomb ( 𝜇 𝐶 ) to the third decimal place, e.g. 1.263 Do not include units in your answer; just write the numerical value.       

What is the formula to calculate the electric potential due to a point charge?

更多留学生实用工具

加入我们，立即解锁 海量真题 与 独家解析，让复习快人一步！