Numerical - Finding unknown resistance in Wheatstone bridge

Q.  In a Wheatstone bridge, the formula for finding unknown resistance (R2) is given by
R2 = ( R2 R3 ) / R1
Where, R1 = 150Ω ± 0.1%
R2 = 250Ω ± 0.1%
R3 = 300Ω ± 0.1%
- Published on 16 Sep 15

a. R2 = 250Ω ± 0.1%
b. R2 = 300Ω ± 0.3%
c. R2 = 750Ω ± 0.3%
d. R2 = 500Ω ± 0.3%

ANSWER: R2 = 500Ω ± 0.3%

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