Electric Fields

1
Electric Fields
Coulombs Law The force between two charged
particles is directly proportional to the product
of the charges and inversely proportional to the
separation
Q1 charge (C) Q2 charge (C) R distance
between charges (m)e0 permittivity of free
space (Fm-1)

2
Electric Field Lines
3
Electric Field Strength E
In general Field Strength is the force per
coulomb at that point in the field
4
Electric Field Strength-Uniform Field
The field strength is the same magnitude and
direction at all points in the field
5
Electric Field Strength-Radial Field
6
Electric Potential V

• Points in space have potential
• Charged particles have potential energy

rememberEnergy Q x V Module 3?
EP charge x potential ? EP charge x
potential difference