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Old November 30th 16, 10:14 PM posted to
David Woolley[_2_]
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Posts: 544
Default I dislike ordering stuff that is not in stock

On 30/11/16 12:34, d wrote:
Surely it would be the other
way around since a higher frequency contains more energy for a given max
amplitude (in this case voltage)?

That's not true. The energy depends on all of time, current and
voltage. For the same voltage and same time period, and as long as the
current (and its phase relationship to the voltage) is the same, the
energy consumption is the same.

For a single cycle it is less.

The only sense in which the energy goes up with frequency is at the
quantum level, but the energy in one photon at 50Hz is miniscule, about
3.313E-32 Joules, or 0.0000003313 yotto Joules.