Wheatstone bridge

Wheatstone bridge method for measurement of medium resistance

Wheatstone bridge- Balanced Bridge condition R1/R2=R3/R4 I1=I3 and I2=I4 Vbc=Vde and Vab=Vad Vbc=I3R3 Vdc=I4R4 As        Vbc=Vdc I3R3=I4R4 I3/I4=R4/R3 Vab=I1R1 and Vad= I2R2 As        Vab=Vad I1R1=I2R2 I1/R2=I2/R1 As        I3=I1 and I2=I4 I3/I4=I1/I2 R4/R3=R2/R1 R1/R2=R3/R4 R3=R4×R1/R2      (Proved)  Advantages- It can measure the medium range resistance (1 Ω <R<1 kΩ). The design is comparatively Read more…