Direction: Q.46 to Q.50 |
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. |
The resistance is adjusted until the bridge is "balanced" and no current flows through the galvanometer. At this point, the voltage between the two mid-points (B and D) will be zero. |
Therefore the ratio of the two resistances in the known leg is equal to the ratio of the two resistances in the unknown leg. |
Read the above passage carefully and give the answer of the following questions: |
A) potential at points B and D remain same
B) large current flows through the circuit
C) battery becomes over heated
D) resistances become small
Correct Answer: A
Solution :
(a) potential at points B and D remain same A Wheatstone bridge is said to be balanced if no current flows through \[{{V}_{G}}\]You need to login to perform this action.
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