Paano Kalkulahin si Wheatstone
Ano ang Wheatstone?
The Wheatstone bridge is a circuit used to measure unknown electrical resistance by balancing two legs of a bridge circuit. R_unknown = R3 × (R2/R1).
Pormula
At balance: R1/R2 = R3/Rx — solve for unknown Rx
- At
- R3/Rx — solve for unknown Rx — R3/Rx — solve for unknown Rx
- R1
- R3/Rx — solve for unknown Rx — R3/Rx — solve for unknown Rx
- R2
- R3/Rx — solve for unknown Rx — R3/Rx — solve for unknown Rx
- R3
- R3 value — Variable used in the calculation
- Rx
- Rx value — Variable used in the calculation
Step-by-Step na Gabay
- 1Four resistors arranged in a diamond (bridge) configuration
- 2A galvanometer in the centre detects current imbalance
- 3At balance: R1/R2 = R3/Rx — solve for unknown Rx
Mga Nalutas na Halimbawa
Input
R1=100Ω, R2=200Ω, R3=150Ω
Resulta
Rx = 300Ω
Bridge balanced when R1/R2 = R3/Rx
Mga Karaniwang Mali na Dapat Iwasan
- ✕Assuming the bridge must be exact — modern circuits use operational amplifiers for nulling
- ✕Ignoring lead resistance in precision measurements
Mga madalas itanong
What is a Wheatstone bridge used for?
Precision measurement of resistance, strain gauges, temperature sensors (RTDs), and load cells.
What happens when the bridge is balanced?
No current flows through the galvanometer. The voltage across it is zero.
Handa nang kalkulahin? Subukan ang libreng Wheatstone Calculator
Subukan ito sa iyong sarili →