Register to reply

Formula for electric potential energy

by darksyesider
Tags: electric, energy, formula, potential
Share this thread:
darksyesider
#1
Apr20-14, 04:45 PM
P: 55
In a velocity selector apparatus, i had an electric potential set across two points, and a proton at rest at one end. The potential was 350 V.

My instructor used :

qV = 1/2 mv^2 to find the velocity at the end of the apparatus.

Where did the left hand side of the eqn come from??
Phys.Org News Partner Physics news on Phys.org
New approach to form non-equilibrium structures
Nike krypton laser achieves spot in Guinness World Records
Unleashing the power of quantum dot triplets
Doc Al
#2
Apr20-14, 05:42 PM
Mentor
Doc Al's Avatar
P: 41,304
Quote Quote by darksyesider View Post
qV = 1/2 mv^2 to find the velocity at the end of the apparatus.

Where did the left hand side of the eqn come from??
That describes the energy gained by a charge q moving through a potential difference V. (The work done by the field on the charge.)
Doc Al
#3
Apr20-14, 05:51 PM
Mentor
Doc Al's Avatar
P: 41,304
You may want to review this: Work done by electric field

Vb123
#4
Apr20-14, 07:54 PM
P: 2
Formula for electric potential energy

qv=(0.5)mv^2
This expression indicates Kinetic Energy gained by a body with charge q while moving in a region of Electric potential v.


Register to reply

Related Discussions
Change in potential energy/work formula for electric charges. Introductory Physics Homework 1
Electric potential and electric potential energy concept questions Introductory Physics Homework 3
Electric potential energy and gravitational potential energy of Deuterium nuclear? High Energy, Nuclear, Particle Physics 1
Electric potential energy and gravitational potential energy of Deuterium nuclear? Advanced Physics Homework 1
Electric field, Electric Potencial, Electric Force, Potential Electric Energy Classical Physics 1