百师联盟·2023届高三一轮复习联考(二)2广东卷物理试题答案

百师联盟·2023届高三一轮复习联考(二)2广东卷物理试题答案，目前大联考答案网已经汇总了百师联盟·2023届高三一轮复习联考(二)2广东卷物理试题答案的各科答案和试卷，更多全国100所名校答案请关注本网站。

5.如图所示为多用电表欧姆挡的原理示意图，其中电流表的满偏电流为300A,内阻为R。=1002,滑动变阻器的最大阻值为R。=50k2,电池电动势为E=1.5V、内阻不计，两表笔短接调零后，用它测量电阻R,,当电流计指针指在满刻度的三分之一处时，R,的阻值是A.1002B.1k2C.10 koD.100k2【答案】C欧姆定律，满偏时1。=尼，当电流表指针指在满刻E31,R十R,联立可得R,=10kD,C正确，A、B、D错误。

书面表达One possible version:Dear Jack,Knowing you're interested in the online activity "Tell Teenage Stories in English"to be held by our school,I'm more than delighted to tell you further information about it.The activity,intended for high school students at home and abroad,takes place on August 15.In additionto being closely related to teenage life,the stories should be inspiring.Each of them should be presented inEnglish within five minutes.As far as I'm concerned,not only will this activity improve our ability to express ourselves,but it will relaxus from our stressful study.Therefore,I strongly recommend that you participate in it.Yours,Li Hua