In a Wheatstone bridge, if the ratio of resistances R1 to R2 is equal to the ratio of R3 to R4, what can be concluded?
Practice Questions
1 question
Q1
In a Wheatstone bridge, if the ratio of resistances R1 to R2 is equal to the ratio of R3 to R4, what can be concluded?
The bridge is balanced.
The current through the galvanometer is maximum.
The potential difference across the galvanometer is maximum.
The resistances are equal.
When R1/R2 = R3/R4, the bridge is balanced, meaning no current flows through the galvanometer.
Questions & Step-by-step Solutions
1 item
Q
Q: In a Wheatstone bridge, if the ratio of resistances R1 to R2 is equal to the ratio of R3 to R4, what can be concluded?
Solution: When R1/R2 = R3/R4, the bridge is balanced, meaning no current flows through the galvanometer.
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 resistances in the Wheatstone bridge. There are four resistors: R1, R2, R3, and R4.
Step 3: Know the condition for balance in a Wheatstone bridge. The bridge is balanced when the ratio of the resistances in one leg equals the ratio in the other leg.
Step 4: Write the condition for balance mathematically. This is expressed as R1/R2 = R3/R4.
Step 5: Conclude what happens when the bridge is balanced. When R1/R2 equals R3/R4, it means that no current flows through the galvanometer, indicating a balanced state.
