If the value of one of the resistances in a Wheatstone bridge is increased, what

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Question: If the value of one of the resistances in a Wheatstone bridge is increased, what effect does it have on the balance of the bridge?

Options:

Correct Answer: It becomes unbalanced

Solution:

Increasing one resistance will generally cause the bridge to become unbalanced.

If the value of one of the resistances in a Wheatstone bridge is increased, what effect does it have on the balance of the bridge?

If the value of one of the resistances in a Wheatstone bridge is increased, what effect does it have on the balance of the bridge?

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: Identify the components of the Wheatstone bridge. It has four resistors arranged in a diamond shape, with a voltage source and a galvanometer.
Step 3: Know that the bridge is balanced when the ratio of the resistances in one leg equals the ratio in the other leg.
Step 4: If you increase the value of one of the resistors, it changes the ratio of resistances in that leg.
Step 5: When the ratio changes, it disrupts the balance of the bridge.
Step 6: As a result, the galvanometer will show a deflection, indicating that the bridge is now unbalanced.

Wheatstone Bridge Principle – A Wheatstone bridge is used to measure unknown resistances by balancing two legs of a circuit. The balance condition is achieved when the ratio of resistances in one leg equals the ratio in the other leg.
Effect of Resistance Change – Increasing one of the resistances in the bridge alters the ratio of resistances, leading to an imbalance in the bridge.