[sdiy] EM radiation -- current or power ?

[Andre Majorel]

Does the amount of EM radiation depend on current or power ?

In other words, will two wires carrying 1 W at 18 VAC induce
more 50 Hz hum in neighbouring audio cables and circuits than
two wires carrying 1 W at 230 VAC ?

In other other words, are there any drawbacks to putting the
power transformer and the rest of the power supply in separate
boxes ?

Thanks in advance.

-- 
André Majorel http://www.teaser.fr/~amajorel/