If the resistance of one of the arms in a Wheatstone bridge is increased, what effect does it have on the balance condition?

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Q: If the resistance of one of the arms in a Wheatstone bridge is increased, what effect does it have on the balance condition?

Solution: Increasing the resistance in one arm disrupts the balance condition, causing the bridge to become unbalanced.

Steps: 6

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 arms of the Wheatstone bridge. There are four resistors in total, arranged in a diamond shape.
Step 3: Recognize the balance condition. The bridge is balanced when the ratio of the resistances in one arm equals the ratio in the other arm.
Step 4: Consider what happens when you increase the resistance in one arm. This changes the ratio of resistances in that arm.
Step 5: Realize that changing the resistance in one arm disrupts the balance condition. The ratios are no longer equal.
Step 6: Conclude that the bridge becomes unbalanced when the resistance in one arm is increased.