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The Wheatstone bridge was invented by Samuel Hunter Christie in 1833 and improved and popularized by Sir Charles Wheatstone in 1843. It is used to measure an unknown electrical resistance by balancing two legs of a bridge circuit, one leg of which includes the unknown component. Its operation is similar to the original potentiometer. Derivation:
The Wheatstone bridge gives inaccurate readings if it is unbalanced. The Wheatstone bridge measures resistance from few ohms to megohms. The upper range of the bridge can be increased with the help of the applied emf, and the lower range is limited by connecting the lead at the binding post. Sensitivity of the Wheatstone Bridge
Limitations of Wheatstone Bridge. These wheatstone bridges gives inaccurate readings if it is unbalanced. It is a very sensitive device. It is used for measuring resistances ranging from a few ohms to a few kilo-ohms. Example. Question. In a Wheatstone’s bridge R 1 = 100 Ω, R 2 = 1000 Ω and R 3 = 40 Ω. If the galvanometer shows zero ...
May 3, 2023 · Wheatstone Bridge, also specified as the resistance bridge, is employed to calculate the unknown resistance by balancing two legs of the bridge, of which one leg includes the component of unknown resistance. This method was invented by Samuel Hunter Christie in the year 1833, which was later popularized by Sir Charles Wheatstone in 1843.
Jun 11, 2023 · The Wheatstone Bridge is a precise electrical circuit used to measure unknown electrical resistance by balancing two legs of a bridge circuit. Invented by Samuel Hunter Christie in 1833 and popularized by Sir Charles Wheatstone, this method has widespread applications in scientific and industrial instrumentation.
