Phys 4, Section 2 Jan 18, 2002
, where qo is a small test charge moved around in space.
For the electric field E around a point charge q, get
Another form of this equation uses a different constant defined as
lines originate on positive charges and terminate on negative charges.
A field line represents the path through space that a small positive test
charge would follow if placed in that space.
The electric field E at a point is tangent to the field line at that
Last modified on January 23, 2002