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Resistance R4 is known as ________

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in Electrical Measurements by (148k points)
Resistance R4 is known as ________

(a) standard resistance

(b) unknown resistance to be measured

(c) resistance arm

(d) input resistance

The question was asked by my school principal while I was bunking the class.

The origin of the question is Wheatstone Bridge Balance Condition in chapter Measurement of Resistance of Electrical Measurements

1 Answer

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Right choice is (b) unknown resistance to be measured

The best I can explain: R4 is the unknown resistance whose value has to be found by comparison with a standard. R3 is known as the standard resistance. Resistance arm comprises of four resistances including R1, R2, R3, and R4.

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