关键区别 - 安培vs库仑
Ampere and Coulomb are two measurement units that are used to measure thecurrent。电流conductor以安培,而库仑量ure the amount ofcharge。One ampere is equal to the flow of one coulomb of a charge in a second. Unlikecoulomb,which测量充电量。这是安培和库仑之间的关键区别。
当导体内部的电流载体在A的效果下移动时,电流发生在导体内部。电压区别。电流如何发生的一个非常普遍的例子是流过管道的水。如果管道保持水平,则内部不会流动。如果至少稍微倾斜,它将在两端之间产生潜在的差异,并且水将开始流过管道。斜率越高,电势差越高,因此,每秒的水流量越高。同样,如果导线的两端之间的电压差较高,则电荷流量的量将更高,从而使高电流变得更高。
内容
1.Overview and Key Difference
2.What is Ampere
3.What is Coulomb
4.并排比较 - 安培vs库仑
5.概括
What is Ampere?
The measuring unit of current, Ampere, is named after a French mathematician and physicist André-Marie Ampère who is considered as the father of electrodynamics. Amperes are also called as安培, 简而言之。
安培力法指出两条携带电流的平行电线相互施加力。国际Unites(SI)根据该安培的力量定义了一个安培;“安培是那个恒定电流,如果将其保持在两个无限长度的直接平行导体中,可忽略不计的圆形横截面,并在真空中分开一米,将在这些导体之间产生等于2×10-7 Newtons的力每米长度”。
根据欧姆定律,电流与电压有关:
V = I x R
R is the resistance of the current carrying conductor. The power P consumed by a load relates to the current flows through it and the supplied voltage according to:
P = V x I
This can be used to understand the quantity of an ampere. Consider an electric iron having 1000 W rating, which is connected to the power line of 230 V. The amount of current it consumes to heat up can be calculated as:
P = VI
1000 W = 230 V ×I
I = 1000/230
I = 4.37 A
与此相比,在电弧线焊接中,使用近1000 a的电流光束用于熔化铁杆。如果考虑闪电,平均闪电闪光灯传递的电流约为10,000安培。但是,还测量了100,000安培的闪电闪光灯。
Current is measured usingAmmeter。Ammeter works in different techniques. In a moving-coil ammeter, a coil mounted along the coil’s diameter is supplied with the measured current. The coil is placed between two magnetic poles; N and S. As per Flemming’s Left-Hand Rule, a force is induced on a current carrying conductor which is placed inmagnetic field。因此,安装线圈上的力将线圈围绕其直径旋转。这里的偏转量与线圈与电流成正比;因此,可以进行测量。但是,这种方法需要打破导体并将其放置在中间。由于这不能在运行系统中完成,因此在夹具仪中使用磁方法来测量AC and DC currentswithout a physical contact with the conductor.
What is Coulomb?
The SI unit Coulomb, which is used to measure electric charges, is named after the physicist Charles-Augustin de Coulomb who introduced Coulomb’s law.库仑定律states that when two chargesq1和q2are placedr距离分开,一支部队根据:
f =(keq1q2)/r
Here,keis Coulomb’s constant. A Coulomb (C) is equal to the charge of roughly 6.241509×1018number of electrons or protons. Hence, the charge of a single electron can be calculated as 1.602177×10-19C.使用电表测量静电电荷。就像上一个电铁的示例一样,可以在一秒钟内传递到铁中的电荷量为:
I = Q/t
Q = 4.37 A ×1 s
Q = 4.37 C
在闪电闪烁期间,大约15个库罗姆斯电荷可能会以30,000 a的电流从一秒钟的一秒钟内从云中扎根。但是,雷云可以在闪电期间容纳数百个库洛姆斯电荷。
Charge is also measured in ampere-hours (Ah = A x h) in batteries. A typical mobile phone battery of 1500 mAh (theoretically) holds 1.5 A x 3600s = 5400 C of charge, and to make a sense of the charge, it is expressed as the battery can provide 1500 mA current within an hour.
What is the difference between Ampere and Coulomb?
Ampere vs Coulomb |
|
安培是测量电流的SI单元。单位电荷通过一秒钟内的点称为一个安培。 | Coulomb is the SI unit to measure the electrical charge. One coulomb is equal to the charge held by 6.241509×1018protons or electrons. |
测量 | |
Ammeter is used to measure the current. | Charge is measured using Electrometers. |
Definition | |
Current is defined by SI with Ampere’s force law, considering the force acting on current carrying conductors. | 库仑正式定义为将电荷与电流相关联的安培秒。 |
Summery – Ampere vs Coulomb
与库仑不同,安培用于测量电荷的流动,该电荷用于测量静电电荷。尽管Ampere与库仑有关,但根据定义,安培是在不使用电荷的情况下定义的,而是使用作用于电流导体的力。这是安培和库仑之间的区别。
Reference:
1. Lightning flashes and strokes. (n.d.). Retrieved May 29, 2017, from http://hyperphysics.phy-astr.gsu.edu/hbase/electric/lightning2.html
2.安培。(2017年5月28日)。2017年5月29日从https://en.wikipedia.org/wiki/ampere检索
3. Coulomb. (2017, March 24). Retrieved May 29, 2017, from https://en.wikipedia.org/wiki/Coulomb#SI_prefixes
Image Courtesy:
1. “Ampere-def-en” By Danmichaelo (Public Domain) viaCommons Wikimedia
2. “Galvanometer diagram” By TiCPU – (GFDL) viaCommons Wikimedia
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