On 03/01/2013 11:05, Dave Plowman (News) wrote:
In article ,
alan wrote:
As long as the connecting leads can handle the current and are "low"
resistance, the resistance of the leads makes no difference to the
measurement.

Swapping leads on my various DVMs - using what appears to be decent
quality leads - will give different resistance readings for very low
values. Try it.


It doesn't matter if the measuring leads are 0.01ohms or 1 ohm when
measuring the _Voltage_ across a shunt resistor with a DVM (or
voltmeter) with a high impedance input. There may be 100s of Amps
flowing through the shunt resistor but microAmps in the measuring leads.



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