What happens to the total resistance in a Wheatstone bridge when it is balanced?
Practice Questions
1 question
Q1
What happens to the total resistance in a Wheatstone bridge when it is balanced?
It is maximum.
It is minimum.
It is equal to the sum of all resistances.
It is equal to the product of resistances.
When the Wheatstone bridge is balanced, the total resistance is at a minimum for the given configuration.
Questions & Step-by-step Solutions
1 item
Q
Q: What happens to the total resistance in a Wheatstone bridge when it is balanced?
Solution: When the Wheatstone bridge is balanced, the total resistance is at a minimum for the given configuration.
Steps: 5
Step 1: Understand what a Wheatstone bridge is. It is a circuit used to measure unknown resistances.
Step 2: Know that a Wheatstone bridge has four resistors arranged in a diamond shape.
Step 3: Learn that the bridge is considered 'balanced' when the ratio of the two resistors on one side is equal to the ratio of the two resistors on the other side.
Step 4: When the bridge is balanced, the voltage across the middle (where a galvanometer is connected) is zero.
Step 5: In this balanced state, the total resistance of the circuit is minimized for the given configuration of resistors.
