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What is the effect of load and contact resistance in Kelvin bridge?

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What is the effect of load and contact resistance in Kelvin bridge?

(a) independent

(b) fully dependent

(c) partially dependent

(d) depends on the resistance value

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The query is from Kelvin Bridge in section Measurement of Resistance of Electrical Measurements

1 Answer

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Best answer
Correct choice is (a) independent

Best explanation: Effect of contact and lead resistances are completely eliminated in a Kelvin bridge as they don’t appear in the balance equation. Hence the Kelvin bridge is independent of the load and contact resistances.

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