- #1
Narayanan KR
- 76
- 4
On examining Maxwell's third equation which is about time varying magnetic fields (Faraday's electromagnetic induction) we find that time varying magnetic fields produce loops of electric fields in space irrespective of whether a coil is present or not, if any coil is present then these loops of electric fields are said to produce an induced emf in the coil as stated in Faraday's law.
But, every metal is a Faraday Shield i.e. it won't allow any electric flux to pass via it, then how come the electrons deep inside the coil wire be influenced by this induced electric field ?
Is there any involvement of Poynting Theory, where S = E X H energy diverges into surface of wire there by exciting electrons on the surface alone ?