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WHAT IS THE PRINCIPLE OF WHEAT STONE BRIDGE?
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According to the wheatstone bridge principle if the ratio of the two resistance (R1/R3) on the one edge is equal to the ratio of the two resistance (R4/R2) in another edge then there will be no flow of current between the midpoints of the two edges of resistance....
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➡A Wheatstone bridge is an electrical circuit used to measure an unknown electrical resistance
by balancing two legs of a bridge circuit, one leg of which includes the unknown component. The primary benefit of the circuit is its ability to provide extremely accurate measurements (in contrast with something like a simple voltage divider). Its operation is similar to the original potentiometer.
✔Principle ➡The Wheatstone bridge works on the principle of null deflection, i.e. the ratio of their resistances are equal, and no current flows through the galvanometer. The bridge is very reliable and gives an accurate result
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