A point charge is located at and a point charge is at on the -axis

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

+4\,\mu\text{C}

point charge is located at

x=0

and a

+9\,\mu\text{C}

point charge is at

x=0.30\,\text{m}

on the

x

-axis. At what position along the line joining the charges is the net electric field equal to zero? (a)

x = 0.15\,\text{m}

from the

+4\,\mu\text{C}

charge (b)

x = 0.09\,\text{m}

from the

+4\,\mu\text{C}

charge (c)

x = 0.12\,\text{m}

from the

+4\,\mu\text{C}

charge (d)

x = 0.18\,\text{m}

from the

+4\,\mu\text{C}

charge