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广东高考实验题有2小题,共18分,一个是力学实验,一个是电学实验,其中有两个仪表读数填空,共计4分,这4分要求学生百分百拿到手。自2010年广东实行3+理综考试模式以来,物理学科共考了7个仪表读数问题,分别是刻度尺、游标卡尺、螺旋测微器、电阻箱、电流表、电压表、多用电表。其中不估读的是电阻箱和游标卡尺。限于篇幅,仪器的原理及使用方法,这里不再赘述,本文仅仪表读数方法总结如下:首先应该明确,任何读数只有一个估读位。中学物理教学中把“测量中有效数字保留至仪器精度的下
Guangdong college entrance examination test questions have 2 questions, a total of 18 points, one is a mechanical experiment, one is electrical experiments, including two meter reading fill in the blank, a total of 4 points, which 4 points require students to get one hundred percent hand. Since the implementation of the 3+ rationale test mode in Guangdong in 2010, a total of 7 instrumentation reading problems have been studied in physics. They are graduated scale, vernier caliper, micrometer, resistance box, ammeter, voltmeter and multimeter. Which do not read resistance box and vernier caliper. Due to space limitations, the principle of the instrument and the use of methods, not repeat them here, this article only meter reading method is summarized as follows: First of all, it should be clear that any reading of only one reading bit. In secondary school physics teaching, the effective number in the ”measurement" is retained to the precision of the instrument