Question

principle of wheatstone bridge?

Answer 1

A Wheatstone bridge is an electrical circuit used to measure an unknown electrical resistance by balancing two legs of a bridgecircuit, one leg of which includes the unknown component. ... One of the Wheatstone bridge's initial uses was for the purpose of soils analysis and comparison.

Answer 2

↝In the balanced situation of bridge.

P/Q = R/S

↝It was developed to calculate the value of an unknown resistance.

↝It's a bridge in which a galvanometer with four resistance are arranged.

↝The Potential difference two points in it is Zero and There is no flow of current.

✧✧Samuel Hunter christie invented this "Wheatstone Bridge" in 1833

But ,

✧✧Chearles Wheatstone improved this invention "Wheatstone Bridge" in 1843.