# What is the physical explaination for the presence electrostatic forces (just like we have for gravity)?

We know that gravity is caused by the curls and warps in spacetime fabric.

Does a similar explaination exist for electrostatic forces?

What if there are two particles separated hundreds of kilometres apart, they will have electrostatic force between them, even though it will be negligible. How does this force "travel" between the particles?

If one particle moves a bit towards the other will they both "feel" the change in force instantly? How?

As explained by Einstein, the gravitational force is a result of the curvature of spacetime. The electrostatic force is caused by the exchange of photons (although physicists have hypothesised that the gravitational force is mediated through the exchange of gravitons, but this has never been verified). That is how the electric force "travels". And if you vary the position of one particle, the particles do not feel the change instantaneously. Rather, at the speed of light, $$c$$. Similarities between these two forces are the fact that (at a classical level) the expression for their forces are both inverse-square in design. In the context of your question though, Einstenian Gravity and the electrostatic force are not similar at all.
The electric and magnetic fields are respectively the space-time and purely spacelike curvature of the photon field. Just like the curvature 2-form $$\Omega$$ is the curvature of the spin connection field $$\omega$$ ($$\Omega=d_\omega \omega=d \omega+\omega\wedge\omega$$) in the tetradic formulation of general relativity. By «space-time» curvature I mean that if you have an electrostatic field acting on a charged particle initialy at rest in the reference frame of the source of our field, it will move in space as time goes.