The relationship and difference between electricpotential energy, interaction energy and electrostatic energy are revealed through calculation and discussion of some examples.
通过具体例子的计算和讨论，揭示了静电场中的电势能、相互作用能和静电能之间的联系和区别。
2
Sensitive Galvanometer, Model J0409, is suitable for the laboratories of middle schools and polytechnic schools to measure small electric current and electric potentialdifference.
J0409型灵敏电流计适用于中学、中专等实验室测量直流电路中微小电流和微小电势差。
3
The electric current does not flow if there is not potentialdifference between the ends of a conductor.