Keith Dysart wrote:
So you seem to be claiming that the following two statements can be
simultaneously true:

1. Power [recall p(t)=v(t)*i(t)] is the rate at
which energy is transferred.
2. Energy can be transferred when the power is zero.

To my simple intellect, one of these statements must be false.


The second statement is an oversimplification - it switches between two
inconsistent sets of boundaries. Energy is being transferred within the
system as a whole, even though the power p(t) at some individual points
within the system is zero. If you look consistently at the system as a
whole, there are no contradictions.


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73 from Ian GM3SEK