The four resistors 20, 40, 20+x,80 respectively form a wheatstone bridge.find the value of x
Answers
Answered by
2
As in the wheatstone bridge the ration resistance are equal to 1 only if the system has the equal resistant.
- That is the R₁/R₂=R₃/R₄.
- Here R₁=20
- R₂=40
- R₃=20+x
- R₄=80
- To find the x we need to calculate the ratio
- Therefore putting values 20/40=20+x/80
- 1/2=20+x/80
- Further simplifying 80=2×(20+x)
- 80=40+2x
- 80-40=2x
- 40=2x
- x=20
- That is the value of x.
Similar questions