21-3 Electric potential & potential difference 物理学是整个自然科学和现代工程技术的基础。英文版大学物理课程的开设,首先是使学生掌握专业所必须的物理基础知识和专业词汇;进而要让学生对物理学的内容和方法、工作语言、概念和物理图像,其历史、现状和前沿等方面,
potential difference英语定义 "Potential difference" refers to the difference in electrical potential energy between two points in an electrical circuit. It is a measure of the amount of energy that a charge would gain or lose if it were moved from one point to the other. In an electrical ...
One can think of electric potential difference (and voltage) as a measure of electron pressure. It answers the question, "How badly do the electrons want to move?" In the case of a 1.5 volt battery, not all that much. But in the case of lighting, very badly! Lightning bolts have an...
voltage - the difference in electrical charge between two points in a circuit expressed in volts electric potential, potential difference, potential drop, potential electrical phenomenon - a physical phenomenon involving electricity evoked potential - the electrical response of the central nervous system pr...
1.The difference in electric charge between 2 points in a circuit, expressed in volts or mV. SeeAction potential, Evoked potential, Inhibitory post-synaptic potential,Late potential,Membrane potential,Spike potential,Ventricular late potential, Zeta potential. ...
(General Physics) the difference in electric potential between two points in an electric field; the work that has to be done in transferring unit positive charge from one point to the other, measured in volts. Symbol:U,ΔVorΔφAbbreviation:pdCompareelectromotive force ...
A case study on the ideas that two advanced physics students and two graduate students have about the potential difference and emf concepts is presented. This study is carried out through clinical interviews specially designed to elicit the ontological characteristics of their conceptions. The ...
To say we have a 12.0 V battery means that its terminals have a 12.0 V potential difference. When such a battery moves charge, it puts the charge through a potential difference of 12.0 V, and the charge is given a change in potential energy equal to ΔPE =qΔV. ...
- 《Applied Physics Letters》 被引量: 154发表: 1998年 Effect of surface roughness on the image potential We have calculated the electrostatic potential of a point charge located near a rough dielectric-vacuum interface. The system consists of a vacuum in the r... TS Rahman,AA Maradudin - ...
The volt as a unit of potential difference is named after Alessandro Volta who did a lot of work with the initial physics of electricity and magnetism. We can examine this further by unpacking energy (in joules) as a force (newtons) over a distance (meters). In this way, the voltage is...