None of the above will give you a satisfactory answer, EM-waves in free space is something you have to accept.
magnetra said:However I still have some questions. Existance of electric field necessitates the existance of a charge particle (Correct me if im' wrong with this!). So in space what is the source of such a charge? Are there charged particles in space?
halls said:This means that some particle (or bunch of particles) in the Earth could generate an electric field, and its range could go even to outer space, but there is no need to have charged particles in the space to get that field working, its source is on Earth...
We see Lucy and Ringo both moving, approaching each other.
The loop is stationary and the magnet is moving toward it. There is a magnetic field, but it can't produce any force on my electrons since they are stationary within the loop. Instead, the magnetic field is changing, growing stronger as the magnet gets closer, and this changing magnetic field produces an electric field which causes forces on the electrons, and drives them around the loop and produces the current in the galvanometer.
The magnet is stationary and the loop is moving toward it. The electrons in the loop, since they are moving with the loop, feel a magnetic force, F = - e/c v X B, which drives them around the loop and produces the current in the galvanometer. There is no electric field.
Electric and magnetic fields are not invariant entities themselves, but are aspects of a single entity, the electromagnetic field, which manifests itself differently to different moving observers.