Physics

Problem

A circular ring of radius

0.10\,\text{m}

carries a uniform charge of

5.0\,\mu\text{C}

. A point charge of

2.0\,\mu\text{C}

is placed on the axis of the ring at a point

0.060\,\text{m}

from its centre. Find the magnitude of the electrostatic force on the point charge.

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

. a)

0.40\;\text{N}

5.7\;\text{N}

3.4\;\text{N}

2.7\;\text{N}