Two identical positive point charges

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

Problem

Two identical positive point charges, each of magnitude

+3.0\,\mu\text{C}

, are fixed on the

x

-axis at positions

x=\pm0.20\,\text{m}

. A positive test charge

+1.0\,\mu\text{C}

is placed at the point

(0,\,0.10\,\text{m})

. What is the magnitude and direction of the net electric force on the test charge? (a)

0.67\,\text{N}

upward along the

+y

-axis (b)

0.48\,\text{N}

downward along the

-y

-axis (c)

0.48\,\text{N}

upward along the

+y

-axis (d)

0.24\,\text{N}

upward along the

+y

-axis