What happens to the sensitivity of a Wheatstone bridge if the resistances are ma

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Question: What happens to the sensitivity of a Wheatstone bridge if the resistances are made equal?

Options:

Correct Answer: Sensitivity becomes infinite

Solution:

If the resistances are made equal, the sensitivity of the Wheatstone bridge becomes infinite, as even a small change will cause a large deflection.

What happens to the sensitivity of a Wheatstone bridge if the resistances are made equal?

What happens to the sensitivity of a Wheatstone bridge if the resistances are made equal?

Correct Answer: Sensitivity becomes infinite.

Step 1: Understand what a Wheatstone bridge is. It is a circuit used to measure unknown resistances by balancing two legs of a bridge circuit.
Step 2: Know that the Wheatstone bridge has four resistors: R1, R2, R3, and R4.
Step 3: When the resistances R1 and R2 are equal, and R3 and R4 are also equal, the bridge is balanced.
Step 4: Sensitivity in this context refers to how much the output changes when there is a small change in resistance.
Step 5: If R1 = R2 and R3 = R4, even a tiny change in one of the resistors will cause a large change in the output voltage.
Step 6: This means that the sensitivity of the Wheatstone bridge becomes very high, or infinite, because the output reacts strongly to small changes.

Wheatstone Bridge Sensitivity – The sensitivity of a Wheatstone bridge refers to its ability to detect small changes in resistance. When resistances are equal, even a minimal change in one resistance leads to a significant change in the output voltage.