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[Phys-L] Error propagation measuring Resistance with Volt-Amp methods



Hello:

I'm putting together a laboratory experience about resistance measurement with voltmeter and ammeter, with its two variants: the 'short' method and the 'long' method. I know the formulas to determine errors made by instrument insertion into the circuit (due to internal resistance of the instruments) in each case, on the other hand, the manufacturer states that the ammeter have an error equal +-Ae and the voltmeter have an error equal +-Ve.
I want to make the insertion of the instrument's errors, Ae and Ve, in the short method and long method formulas, and calculate error propagation, in order to compute the total error using the real instruments with both methods, but I can not find a detailed deduction with a step by step procedure, in order to let students follow it alone. I would appreciate if someone can help me, or tell me about relate literature.

Thanks for your attention. My best regards.

Roberto
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