Physics

Problem

A charge

+2\,\mu\text{C}

is located at the origin and a charge

-8\,\mu\text{C}

x = 40\ \text{cm}

on the

x

-axis. A small positive test charge is to be placed on the

x

-axis so that it experiences zero net electrostatic force. At which position will this occur? a)

x = 20\ \text{cm}

x = 80\ \text{cm}

x = -40\ \text{cm}

x = 13\ \text{cm}