几道题目求帮助,谢谢你的帮助作文！

来源：蜘蛛抓取(WebSpider) 时间：2016-04-24 11:03 标签： 谢谢你的帮助
几道物理题求大神帮忙 谢谢！急_百度知道
几道物理题求大神帮忙 谢谢！急
我有更好的答案
url=aIxZKUftD7xh1d6qQ1k-rttKi-FZ6So04lZIoD959thzZyyiiprvwo8l-C3LdxoR" target="_blank">http?url=aIxZKUftD7xh1d6qQ1k-rttKi-FZ6So04lZIoD959thzZyyiiprvwo8l-C3LdxoR感觉这就是个口诀<a href="/link.baidu:///link.baidu
我好像还没说问题吧
。。。我看到下面啦我是这样理解的，可以从电流分流方面分析：我们可以认为电压基本不变（图中很明显就是这样的），那么一条路上的电阻变化将直接导致电流变化；很明显，一条串联路上的电流相同，你可以明白电阻与电流负相关；另一条很简单的道理就是，无论是哪条路上的电阻变化，整条路上的电阻都是和它正相关的（即：电阻变大，总电阻变大）；那么，总电阻变化，总电流也变化（例：某路电阻↗，总电阻↗，总电流↘，该路电流↗，所以别的路，也就是并联的路上的电流↘），也就是串反并同了。总的来说，这个口诀讲述的将整个电路看作一个整体，同时也能拆分为个体的能力。说的有点乱，拿你这题为例：按照常规分析P向上，电阻↘，右侧总电阻↘，由于电压不变，总电流↗，L1的电流不变，那么L2电流↗；而按照串反并同思想，若电阻↘，与变阻器串联的L2电流必然增加，而与之并联的L1电流不变。你可能要问，不是并同吗，为什么电流不变呀？因为这是纯理想情况，电路、电表都是理想情况，不会分压；也就不会使并联的电路分到的电压少了，电流也就没变。
解释一下规律 怎么用
这个问题主要涉及到电路的动态分析问题。串反并同主要指电路中的某一部分的电阻发生变化了，则跟它直接或间接串联的电阻的电流的变化会跟它的变化相反，而并联部分的电流却变化相同。举例来说，当某一部分的电阻变大了，则跟它串联部分的电流必变小，而跟它并联部分的电流则变大。
还有 这题的CD解释
没收到图，可不可以再发一次？
对不起啊，我不大会
其他类似问题
为您推荐：
物理题的相关知识
等待您来回答
下载知道APP
随时随地咨询
出门在外也不愁求英语高手帮忙做几道题谢谢帮忙~~！1.
A （detail）is:A. the end of somethingB. a small partC. a color 2.
The opposite of （succeed）is:A. failB. actC. win
The farmer will be angry if you do not （fasten）all the gates.A. repairB. quickenC. tieD. lock
A person who （seldom）makes a mistakeA. makes mistakes all the time.B. hardly ever makes a mistake.C. never makes a mistake.
The opposite of （unite）is:A. keep apartB. watchC. stay
There used to be only one long-distance telephone company, but now companies like MCI, Sprint, and AT&T all ______ to get people’s business.A. disgustB. containC. compete
Before graduation, he （entertained）his friends at a restaurant to reward them for their support or friendship.A. treatedB. servedC. attractedD. appreciated
Students of the Berry School pay for their education by doing part time labor （related to）particular course of study.A. begun withB. connected withC. translated intoD. concentrated on
Because I have no car, I have to ______ on a neighbor for a ride to work.A. preventB. inspectC. depend
The opposite of （permit）is:A. not careB. not letC. not see
An （injury）is:A. a movementB. something that hurtsC. good health
The opposite of （similar）is:A. smartB. differentC. broken
The two men were not only （rivals）for the same job but also for the same girl.A. enemiesB. fightersC. contestantsD. competitors
The first time Wanda ______ to ice skate, she fell down and broke her wrist.A. mentionedB. attemptedC. requested
As the leader of the department of foreign markets development, my major work is to make extensive （contact）with firms abroad.A. contractB. communicationC. constructionD. content
If you are （uncertain）, you are:A. not interestedB. sureC. not sure
The opposite of （increase）is:A. get smallerB. sit downC. forget
Are you ______ that you are wearing one black shoe and one brown shoe?A. modernB. awareC. capable
The opposite of （grief）is:A. joyB. moneyC. sadness
When you （examine）a menu in a restaurant, youA. wave it in the air, as if to get rid of a fly.B. pay no attention to it.C. look at it carefully to see what you want to order.
A （portion）is:A. all of somethingB. nothingC. a part of something
（Contain）means:A. to dislikeB. to makeC. to have inside
扑夜香袅袅
1.b 2.a 3.d 4.b 5.a 6.c 7.a 8.d 9.c 10.b 11.b 12.b 13.d 14.b 15.b 16.c 17.a 18.b 19.a 20.c 21.c 22.c
1b2a3c4b5a6b7a8b9c10b11b12b13d14b15b16c17a18b19c20c21c22c
为您推荐：
扫描下载二维码

我要回帖

更多关于 谢谢你的帮助 的文章

 

随机推荐