Question

小剛和小紅同學在測量小燈泡的電阻時，記錄了下面的數據：計算出每次實驗的電阻，比較這些電阻你能發現什么？嘗試著對你的發現作出解釋．

實驗次數	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：

實驗次數                      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 隨著電壓的升高，燈絲的電阻增大．

提示：