3. 某同学做“描绘小灯泡的伏安特性曲线”实验时，得到的I-U图像如图所示。从图中状态a到状态b，小灯泡电阻的变化量和电功率的变化量分别为（）
描绘小灯泡的伏安特性曲线 · 历年高考物理真题与解析
本页汇总 高考真题检索 的「描绘小灯泡的伏安特性曲线」高考物理真题共 1 道，覆盖 2026 年，最常出题型为 单选题；含完整答案与解析。
1questions
Past questions included
2026
Years covered
区分题为主
Overall difficulty
Single-choice
Most common question type
Practice This Topic
Do 5 reliable past questions first, then see the answers and explanations after you submit
常用解题方法图像法
常见易错点图像斜率或面积含义误读
Core competencies应用
Past Question List
相关考点
所属章节
Keep Practicing This Topic
Start from one question and continue with the same question type, knowledge point, and approach. You can also describe this topic in one sentence to build a practice paper or handout and print it.
View all past questions for this topic 用这个考点出一份练习 Paper出一份讲义（例题 + 练习）