Three point charges are arranged on the -axis as follows: a charge at

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

Problem

Three point charges are arranged on the

x

-axis as follows: a

+2\,\mu\text{C}

charge at

x=-0.30\,\text{m}

, a

-8\,\mu\text{C}

charge at

x=0

, and a

+2\,\mu\text{C}

charge at

x=+0.30\,\text{m}

. Excluding

x=0

, at which positive

x

-coordinate is the net electric field equal to zero? (a)

x\approx 0.60\,\text{m}

(b)

x\approx 0.20\,\text{m}

(c)

x\approx 0.64\,\text{m}

(d)

x\approx 0.45\,\text{m}