Question

The Wheatstone bridge and its balance condition provide a practical method for the determination of ___________

Answer 1

Wheatstone Bridge.

1. A Wheatstone bridge is an electrical circuit that measures an unknown electrical resistance by balancing two legs of a bridge circuit, one of which includes the unknown component.
2. A Wheatstone bridge works on the principle of null deflection.
3. The bridge is unbalanced under normal conditions, with current flowing via the galvanometer. When no current flows through the galvanometer, the bridge is said to be balanced.
4. By modifying the known and variable resistances, this condition can be attained. This method is used to find the value of unknown resistance.
5. Formula to find the unknown resistance through the wheat stone bridge, $\begin{array}{l}R=S\frac{P}{Q}\end{array}$Where R is the unknown resistance, S is the standard arm of the bridge, and P and Q are the ratios of the arm of the bridge.

The Wheatstone bridge and its balance condition provide a practical method for the determination of unknown resistance.