Section 2.3 · Examples · 2 of 18
Example 2.3.2: Unit vector along the displacement
Unit vector along the displacement
#Find the unit vector in the direction of the displacement vector if the observer and the source are located at and , respectively.
Field minus source, then divide by the length:
Answer
This unit vector points from the source towards the observer, and a field produced by a positive point charge at would point in this direction at .