Two point charges and are kept apart in air

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

Problem

Two point charges

+2\,\mu\text{C}

and

-4\,\mu\text{C}

are kept

5\,\text{cm}

apart in air. What will be the sign of their electrical potential energy? (a)

+\text{ve}

(Positive) (b)

0

(Zero) (c)

-\text{ve}

(Negative) (d) Cannot be determined without knowing

k