How is the contact resistance related to the circuit while measuring a low resistance?(a) independent of the type of resistance(b) it is negligible(c) depends on the e.m.f source(d) it is very highThe question was asked in a job interview.This question is from Measurement of Low Resistance topic in section Measurement of Resistance of Electrical Measurements

How is the contact resistance related to the circuit while measuring a

1.	How is the contact resistance related to the circuit while measuring a low resistance?(a) independent of the type of resistance(b) it is negligible(c) depends on the e.m.f source(d) it is very highThe question was asked in a job interview.This question is from Measurement of Low Resistance topic in section Measurement of Resistance of Electrical Measurements
Answer» CORRECT choice is (b) it is negligible To EXPLAIN: The contact and lead RESISTANCES form a part of the circuit WHOSE resistance is very high.As a result the contact and lead resistances are usually neglected COMPARED to the high resistance value.

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