Electric Potential
Core Sentence / 核心句
Electric potential is electric potential energy per unit charge.
中文理解：电势是单位电荷具有的电势能，是标量。
Formula / 公式或规则
When To Use / 什么时候用
未来看到 work by electric force、potential difference、voltage，就用 electric potential。
Watch Out / 易错点
electric potential 是 scalar；electric field 是 vector。
Search and Source Mentions / 搜索与出现位置
Mentioned In / 出现位置
- AP电磁学第9次正课-电功率电表与基尔霍夫定律 · closed-loop potential
- “The loop rule is energy conservation written as a sum of potential rises and drops.”
- AP电磁学第7次正课-电容器与电容储能 · field-to-voltage integration
- Potential difference comes from integrating the electric field between capacitor conductors.
- AP电磁学第6次正课-等势面与静电平衡 · equipotential surfaces
- “An equipotential surface contains points with the same electric potential.”
- AP电磁学第6次正课-等势面与静电平衡 · equal versus zero potential
- “No potential difference means equal potential, not zero potential.”
- AP电磁学第5次正课-电势差与电场电势关系 · potential difference
Potential difference is the change in electric potential energy per unit charge.
- AP电磁学第5次正课-电势差与电场电势关系 · E-V differential relation
The electric field is the negative gradient of electric potential.
- AP电磁学第4次正课-电势能与电势 · Electric potential definition
Electric potential is electric potential energy per unit charge; unlike electric field, it is a scalar.
- AP电磁学第1次正课-电荷库仑定律与电场 · 11. Additional Clarifications from the Course PDF / 教案辅助补充
暂时不把教案后面的 Electric Fields of Different Charge Distributions、Gauss's Law、Electric Potential、Capacitors、Electric Circuits、Magnetic Fields 全部塞进来。那些需要等对应课堂 transcript，再单独生成后续笔记。
- AP电磁学第1次正课-电荷库仑定律与电场 · Energy / 能量
重力、电场力、库仑力都可以作为保守力来理解。后面 electric potential energy 会沿着这个思路发展。
- AP电磁学第2次正课-连续带电体电场与电通量 · Knowledge Point 2: Electric Field Lines Compress a Vector Field Into a Picture
- electric potential 是 scalar，后面才会系统讲