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Electric Potential
- To move a particle with charge q in an electric field, from point A to point B, an external agent needs to do work; the amount of work done is equal to Ub Ua, where Ub is the electric potential energy at A, and Ub is the electric potential energy at B.
- In a uniform electric field, the potential difference between 2 points separated by a vector d is the dot product E.d; if you move along the field lines, the potential drops.
- The electric potential of a point charge Q at a distance r is V = kQ/r.
- A surface perpendicular to the electric field lines is an equipotential surface.
- The potential energy of a system of 2 point charges Q and Q separated by a distance r, is U = kQQ/r.
Electric Potential
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
- Intro
- Electric Potential Difference
- Example :Earth and Object
- Work Done
- Work Done Against Field
- Difference in Potential, Between Points
- Va=Vb+Ed
- Potential Difference in a Constant Electric Field
- Point Charge
- Electric Field of Point Charge is Radial
- Force Applied is Perpendicular to Displacement
- Independent of Path
- Collection of Point Charge
- Equipotentail Surface
- Potential Energy: System of a Two Point Charges
- Potential Energy: System of Point Charges
- Extra Example 1: Electric Potential of Particle
- Extra Example 2: Particle Fired at Other Particle
































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