A particle of mass $1 \, \text{g}$ and charge $1 \, \mu\text{C}$ is held at rest on a frictionless horizontal surface at a distance of $1 \, \text{m}$ from a fixed charge of $2 \, \text{mC}$. If the particle is released, it will be repelled. The speed of the particle when it is at a distance of $10 \, \text{m}$ from the fixed charge is –