NEET Questions Solved

PMT - 1986

In the circuit shown in the adjoining figure, the current between B and D is zero, the unknown resistance is of 

(1) 4 Ω

(2) 2 Ω

(3) 3 Ω

(4) em.f. of a cell is required to find the value of X

(2) By balanced Wheatstone bridge condition 16X=40.5

X=84=2Ω 

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