Ask : What is inductor ?
Reply: An inductance is the inductance of a copper wire. The inductance depends not only on the length of the copper wire, but also on its shape. The inductance of copper wire with repeated bending is less than that of copper wire with less bending and larger bending distance.
There is inductance when the electric current passes through the conductive body, and electromagnetic radiation will be generated when the electric current passes through the conductor, and the induced electromotive force will be generated in the nearby conductor.