On 8/25/06, Harry Veeder <[EMAIL PROTECTED]> wrote:

Systems where either the input is mechanical power and the output is
electrical power OR the reverse do obey lenz law ...

but a system of permanent magnets whose input AND output is mechanical power
does not obey lenz law.

If the shield is in motion and is already saturated how does the coil
induce a back EMF in the shield?  Neither the magnet nor the coil is
in motion.

Terry

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