A point charge is fixed at the origin

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

Problem

3.0\,\mu\text{C}

point charge is fixed at the origin. A second point charge

q

is fixed on the

x

-axis at

x=0.40\,\text{m}

. The electric potential measured at the point

x=0.20\,\text{m}

on the axis is

0\,\text{V}

. Determine the value of

q