On Tuesday, 24 April 2018 20:33:41 UTC+1, Roger Hayter wrote:
Archibald Tarquin Blenkinsopp wrote:




Personally I would make the observation with a DMM. The 10Meg input
resistance would be more than enough to take the cable into a
definable voltage range.

AB

It already is!! The PD is there, irregardless of you connecting
anything. Inductive reasoning from knowing what happens at the other
end and making the reasonable assumption that the cable contains
continous length(s) of conductive copper is perfectly sufficient for
*truth* with a high degree of probability. No test is necessary! No
current flow is necessary.

Stop talking sense Roger. Let him enjoy his planet in peace.