Question

小刚和小红同学在测量小灯泡的电阻时，记录了下面的数据：计算出每次实验的电阻，比较这些电阻你能发现什么？尝试着对你的发现作出解释．

实验次数	I/A	U/V	R/Ω
1	0．5	6
2	0．48	6．5
3	0．44	5
4	0．4	4．5
5	0．36	4

 

Answer 1

答案：
解析：

实验次数                      I/A                               U/V                                    R/Ω 1                                  0．5                             6                                    12 2                                  0．48                           6．5                                    13.5 3                                  0．44                           5                                    11.4 4                                  0．4                             4．5                                    11.2 5                                  0．36                           4                                    11.1 随着电压的升高，灯丝的电阻增大．

提示：