Three point charges are placed on the -axis: at

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Electric Force Field and Potential · Electric Force Field and Potential

Problem

Three point charges are placed on the

x

-axis:

+6\,\mu\text{C}

x=0

-2\,\mu\text{C}

x=0.40\,\text{m}

, and

+2\,\mu\text{C}

x=1.0\,\text{m}

. (i) Determine the net electric field (magnitude and direction) at the point

P

located at

x=0.20\,\text{m}

. (ii) Find the position(s) on the

x

-axis, other than at infinity, where the net electric field due to the three charges is zero.