If the resistance of one of the resistors in a Wheatstone bridge is changed, what will happen to the balance condition?
Practice Questions
1 question
Q1
If the resistance of one of the resistors in a Wheatstone bridge is changed, what will happen to the balance condition?
It will remain unchanged.
It will become balanced.
It will become unbalanced.
It will depend on the value of the changed resistor.
Changing the resistance of one of the resistors will alter the ratio, thus making the bridge unbalanced.
Questions & Step-by-step Solutions
1 item
Q
Q: If the resistance of one of the resistors in a Wheatstone bridge is changed, what will happen to the balance condition?
Solution: Changing the resistance of one of the resistors will alter the ratio, thus making the bridge unbalanced.
Steps: 5
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 equals the ratio in the other leg.
Step 4: Recognize what happens when you change one resistor. Changing the resistance of one of the resistors will change the ratio of resistances in that leg.
Step 5: Conclude the effect of the change. Since the ratio is altered, the balance condition is disrupted, making the bridge unbalanced.
