Suppose there is an uniform magnetic field along z-direction. Now someone turns off the field. Then there will be an induced electric field. Can anybody draw this induced electric field lines? I know the electric field will curl around. But where will be the centre of that curl. Do the electric field lines curl around the individual magnetic field lines or anything elese. If I consider a loop of wire then I can easily answer using Flux Rule or Lenz's law. But I want the field lines without considering any loop. Thanks.