Well, there are RF antennae that shoot our kilowatts or even megawatts of EMF, and there's no mechanical stress at all.
As a HAM radio operator, you could literally hang a copper wire between two trees and pump 1 kW into it. No mechanical stress whatsoever - the EMF frequency is too high to generate elastic waves in the wire.
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If it acts as a (relatively good) antenna to emf, then won't emf cause a mechanical stress on the strand?
Well, there are RF antennae that shoot our kilowatts or even megawatts of EMF, and there's no mechanical stress at all.
As a HAM radio operator, you could literally hang a copper wire between two trees and pump 1 kW into it. No mechanical stress whatsoever - the EMF frequency is too high to generate elastic waves in the wire.