Two points on a line are apart

PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Two points on a line are

4.0\,\text{cm}

apart. The electric potential at the first point is

+250\,\text{V}

, and at the second point it is

+190\,\text{V}

. Calculate the magnitude of the average electric field between the two points.