For electrostatics, the concept of electric field is convenient, but not
really necessary Electric field is an elegant way of characterising the
electrical environment of a system of charges Electric field at a point in
the space around a system of charges tells you the force a unit positive
test charge would experience if placed at that point (without disturbing
the system) Electric field is a characteristic of the system of charges and
is independent of the test charge that you place at a point to determine
the field