If the resistance of one arm of a Wheatstone bridge is increased, what will happ
Practice Questions
Q1
If the resistance of one arm of a Wheatstone bridge is increased, what will happen to the balance condition?
The bridge will remain balanced
The bridge will become unbalanced
The bridge will balance at a different point
The bridge will short circuit
Questions & Step-by-Step Solutions
If the resistance of one arm of a Wheatstone bridge is increased, what will happen to the balance condition?
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 the balance condition. The bridge is balanced when the ratio of the resistances in one leg is equal to the ratio in the other leg.
Step 4: Recognize what happens when you increase the resistance in one arm. This changes the ratio of resistances in that leg.
Step 5: Conclude that increasing the resistance in one arm disturbs the balance condition, making the bridge unbalanced.
Wheatstone Bridge – A circuit used to measure unknown resistances by balancing two legs of a bridge circuit.
Balance Condition – The state in which the ratio of resistances in one arm of the bridge equals the ratio in the other arm, resulting in no current flow through the galvanometer.
Effect of Resistance Change – Changing the resistance in one arm alters the balance condition, leading to an imbalance in the circuit.
