Three identical point charges of are fixed at the vertices of an equilateral triangle…

PHYSICS · Single correct · CBSE · Physics · Electrostatic Potential and Capacitance · Electrostatic Potential and Capacitance

Problem

Three identical point charges of

+2.0\,\mu\text{C}

are fixed at the vertices of an equilateral triangle of side

0.40\,\text{m}

. What amount of work must be done to bring a fourth charge of

+2.0\,\mu\text{C}

from very far away to the center of the triangle? (a)

-4.7\times10^{-1}\,\text{J}

(b)

1.6\times10^{-1}\,\text{J}

(c)

4.7\times10^{-1}\,\text{J}

(d)

2.7\times10^{-1}\,\text{J}