Question

Electric field lines can't pass through Conductor but pass in dielectric .Explain​

Answer 1

Conductors are metals. In metal, there are so many free electrons which are able to move freely inside the metal without any bound. After keeping a conductor under the influence of an electric field, the free electrons of the conductor will arrange themselves such a way so that they can cancel any field line inside the conductor and make the electric field 0 inside it. This is the most probable way for the charges to stay at lowest potential as possible.

But when we pass electricity through the conducting wire, the electric field inside the wire is not 0 anymore. Otherwise, electrons could not move through the wire to make a current. After connecting with any source of potential difference, the electrons of the conducting wire organize themselves at every bent of the wire to make directional map for the electrons for where to go by creating as required electric field inside it.