When no current flows through the galvanometer, the Wheatstone bridge is said to be in a balanced condition, represented by the equation P/Q = X/R.
Using very high or very low resistance can introduce errors due to the sensitivity of the bridge and the resistance of connecting wires, affecting the galvanometer's deflection.
The variable resistor R is adjusted to achieve a null deflection in the galvanometer, indicating a balanced condition.
K = 24 Ω
By applying Kirchhoff's Current Law (KCL) and Kirchhoff's Voltage Law (KVL) to the circuit, leading to the equation P/Q = X/R.
The total resistance is 24 Ω.
The measurements are accurate and precise, as it is based on the null deflection method, preventing current flow through the galvanometer and avoiding energy consumption.
At balanced condition, when no current flows through the galvanometer, the principle is P/Q = X/R, meaning the ratio of resistances in adjacent arms is equal.
This requires additional information to calculate.
1/R = 1/R1 + 1/R2 + 1/K
In a balanced condition, the equation P/Q = X/R holds true, indicating that the ratios of the resistances are equal.
This requires additional information to calculate.
It is an electric circuit used for the accurate measurement of resistance of a conductor, containing four resistors P, Q, R, and X connected to form a quadrilateral.
