"Sn!pe" wrote in message
.uk...
gareth wrote:

"Sn!pe" wrote in message
o.uk...

What produces the electric component of the EM field?

The changing magnetic field.

Of course, it should go withour saying that the axis of spin must
be between the N and S poles, and not along the axis of the magnet,
in case of confusion thereto.

I don't understand. Is it not the case that the electric component of
the EM field arises from a voltage difference? How does that voltage
difference arise, please?

I suggest that you go back to an earlier level and think about the dynamo,
alternator and transformer, where a changing magnetic field produces
an electric field, for it is the same principle.

It is unfortunate that matters of electricity are very difficult to
understand
in full, so we are presented with a series of models (usually starting off
with the increasing pressure as the depth of water in a bucket is increased)
none of which are absolutely correct, but all of which get us over a hurdle
of understanding until along comes the next model.

And the biggest partial model that leads to much understanding is that
electricity is all about pos and neg charges whereas in fact it is
all about the EM fields!