Wheatstone Bridge Calculator

The Formula

The formula for calculating the unknown resistance in a Wheatstone bridge is:

\[Rx = \frac{R2 \times R3}{R1}\]

Where:

• Rx: The unknown resistance we're calculating
• R1, R2, R3: Known resistances in the bridge

Calculation Steps

1. Identify the values of R1, R2, and R3
2. Insert these values into the formula:
3. Rx = (R2 * R3) / R1
4. Perform the multiplication and division to get the result in ohms (Ω)

Example Calculation

Let's calculate Rx for a Wheatstone bridge with R1 = 100 Ω, R2 = 200 Ω, and R3 = 300 Ω:

\[Rx = \frac{200 \Omega \times 300 \Omega}{100 \Omega} = 600 \Omega\]

Visual Representation

This visual shows a Wheatstone bridge with the resistances from our example calculation, including the calculated unknown resistance Rx.