电场线处处平行的区域为什么是匀强电场? Why is the area where the Electric Field Line is parallel everywhere Uniform Electric Field?A.利用高斯定理可以证明同一电场线各点的电场强度相等;利用静电场环路定理可以证明不同电场线上的场 强相等,故电场线处处平行的区域一定是匀强电场; It can be proved that the Electric Field Intensity of each point of the same Electric Field Line is equal by using Gauss Theorem, and the Electric Field Intensity of different Electric Field Lines is equal by using Electrostatic Field Loop Theorem, so the area where the Electric Field Lines are parallel everywhere must be Uniform Electric Field;#B.利用高斯定理可以证明同一电场线各点的电

电场线处处平行的区域为什么是匀强电场? Why is the area where the Electric Field Line is parallel everywhere Uniform Electric Field?

A.利用高斯定理可以证明同一电场线各点的电场强度相等;利用静电场环路定理可以证明不同电场线上的场 强相等,故电场线处处平行的区域一定是匀强电场; It can be proved that the Electric Field Intensity of each point of the same Electric Field Line is equal by using Gauss Theorem, and the Electric Field Intensity of different Electric Field Lines is equal by using Electrostatic Field Loop Theorem, so the area where the Electric Field Lines are parallel everywhere must be Uniform Electric Field;#B.利用高斯定理可以证明同一电场线各点的电
参考答案和解析

相关考题:

An electric heater draws 10 A from a 120V line. The resistance of the heater is _____. A、1200?B、120?C、12?D、1.2?

关于同一电场的电场线,下列表述正确的是A.电场线是客观存在的B.电场线越密,电场强度越小C.沿着电场线方向,电势越来越低D.电荷在沿电场线方向移动时,电势能减小

By means of “free verse,” _______ believes that he has turned the poem into an open field, an area of vital possibility where the reader can allow his own imagination to play.A、Emily DickinsonB、Walt WhitmanC、Robert FrostD、Ezra Pound

Why not ______ to Professor Chen for advice? He is an expert in this field.A、goB、to goC、you goD、your going

If you need to access information and know where it is on the Web, you only need to enter the entire www address into your browser’s Uniform. Resource Locator (URL) field.() 此题为判断题(对,错)。

In an AC.synchronous motor electric propulsion plant,propeller speed is controlled by() A.prime mover speedB.number of energized main motor polesC.propulsion generator field strengthD.electric coupling field strength

Why are you working in a field other than the one in which you have a degree?

Yuri created a formula for a button. The code is supposed to set the value of an existing field called title. He used the following formula: title:= @propercase (title); after the foumula runs ,the title field is null. Why? ()A、the value of one field cannot be set from the value in another field B、the text string in the formula is set to null. Thus notes cannot validate the formula C、when setting the value of a field , the formula must be in the field‟s input validation event D、the formula does not specify that title is an existing field. Thus it is interpreted as a temporary variable

证明:在真空静电场中凡是电场线都是平行直线的地方,电场强度的大小必定处处相等;或者换句话说,凡是电场强度的方向处处相同的地方,电场强度的大小必定处处相等。

关于电场线,以下说法正确的是()A、电场线上各点的电场强度大小相等B、电场线是一条曲线,曲线上的每一点的切线方向都与该点的电场强度方向平行C、开始时处于静止的电荷在电场力的作用下运动的轨迹必与一条电场线重合D、在无电荷的电场空间,电场线可以相交

Field of view( FOV) relates to the ( )A、diameter of the patient apenure of the imagerB、maximum diameter of the patientC、diameter of the area that isreconstructedD、the diameter of a pixel

匀强电场的电场线是一些在空间分布均匀,互相平行的直线。

when robert created a response form. he set the "formulas inherit values from selected document" option on the form properties, the field name on the review form is the same as the field name on the inheriting form, however the form does not inherit any data ,why ?()A、he failed to specify the form type  B、the inheriting form is not a response form  C、he specified the same field names on both forms D、he failed to provide inheritance formulas for each field

单选题关于带电粒子的运动,下面各种说法中,正确的是(  ).A沿着电场线方向飞入匀强电场,电场力做功,动能增加B沿着磁感线方向飞入匀强磁场,磁场力做功,动能增加C垂直电场线方向飞入匀强电场,在电场中运动,电场力不做功D垂直磁感线方向飞入匀强磁场,在磁场中运动,磁场力不做功

单选题操作完后,关掉电动机。()AAfter operation, start the electric motor.BBefore operation, stop the electric motor.CBefore operation, start the electric motor.DAfter operation, stop the electric motor.

单选题在匀强电场中(  ).A电势高处电场强度大B负电荷沿电场线方向移动时电势升高C电势高的地方和电势低的地方,电场强度相同D电荷垂直于电场线方向进入电场后,电荷不受电场力的作用

单选题Why did the electric fence fail? It is because of _____.AThe deer are smartBThe winter is coldCThe fence is of low qualityDSnowpack serves as an insulator

单选题when robert created a response form. he set the "formulas inherit values from selected document" option on the form properties, the field name on the review form is the same as the field name on the inheriting form, however the form does not inherit any data ,why ?()Ahe failed to specify the form type  Bthe inheriting form is not a response form  Che specified the same field names on both forms Dhe failed to provide inheritance formulas for each field

单选题If the electric motor driving an air compressor fails to start, the cause may be a ().Aleaking unloaderBtripped circuit breakerCcontrol line leakDdefective pop valve

单选题When there is a fire in a large electric motor, normally the very FIRST step is to ()Asecure the electric supplyBventilate area to remove smokeCstart the fire pump and lead out hoseDapply foam

单选题Yuri created a formula for a button. The code is supposed to set the value of an existing field called title. He used the following formula: title:= @propercase (title); after the foumula runs ,the title field is null. Why? ()Athe value of one field cannot be set from the value in another field Bthe text string in the formula is set to null. Thus notes cannot validate the formula Cwhen setting the value of a field , the formula must be in the field‟s input validation event Dthe formula does not specify that title is an existing field. Thus it is interpreted as a temporary variable

单选题Who was the most famous of all American inventors and invented electric lamp, phonograph, motion pictures and parallel circuit?AJohn StevensBAlexander Graham BellCThomas Alva EdisonDJohn H. Hall

单选题Field of view( FOV) relates to the ( )Adiameter of the patient apenure of the imagerBmaximum diameter of the patientCdiameter of the area that isreconstructedDthe diameter of a pixel

单选题If two AC generators are operated in parallel, the load is distributed evenly by()Aa rheostatBa balancing coilCchanging field excitationDadjusting the governor settings

单选题As a general rule, the first troubleshooting action to be taken in checking faulty electric control devices is to ().Adraw a one line diagram of the circuitryBtest all fuses and measure the line voltageCtake megger readingsDinsulate the apparatus from ground

单选题Prior to any overhaul work on electric equipment, it is important to ensure the circuits are ().AliveBdeadCexcitedDon line

单选题What type of electric motor is most commonly used on board ship?()Anon-synchronous electric motorBsynchronous electric motorCfully enclosed electric motorDwatertight electric motor

单选题The resistance of electric wire will decrease as its ()Alength increasesBcross-sectional area increasesCtemperature increasesDpercent of metallic purities increases