Three point charges are placed at the vertices of an equilateral triangle of side : at

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

Problem

Three point charges are placed at the vertices of an equilateral triangle of side

6\,\text{cm}

q_1 = +2\,\mu\text{C}

(0\,\text{cm}, 0\,\text{cm})

q_2 = +2\,\mu\text{C}

(6\,\text{cm}, 0\,\text{cm})

, and

q_3 = -2\,\mu\text{C}

(3\,\text{cm}, 5.2\,\text{cm})

. Determine the magnitude and direction of the net force on

q_1

. Express the direction as the angle measured counter-clockwise from the

+x

-axis. (Take

k = 9 \times 10^{9}\,\text{N}\,\text{m}^2\,\text{C}^{-2}

.) (a)

10\,\text{N at }60^{\circ}

(b)

10\,\text{N at }120^{\circ}

(c)

5.1\,\text{N at }105^{\circ}

(d)

17.3\,\text{N at }30^{\circ}