On 29/07/2014 11:14, John Williamson wrote:
On 29/07/2014 07:43, harryagain wrote:
"John Williamson" wrote in message
...
On 28/07/2014 19:20, harryagain wrote:
....
The loss arises from energy taken to reverse the magnetic field.
https://en.wikipedia.org/wiki/Magnetic_hysteresis


Not in copper or aluminium wires.

Any magnetic field takes energy to establish or reverse it.
Magnetic fields are associated with any electric current.


That's not what it says in the article you referred us to.

Are you suggesting that Harry might have posted an article he has not
read thoroughly and understood completely?

--
Colin Bignell