In a Wheatstone bridge, if the ratio of resistances R1 to R2 is equal to the rat

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Question: 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?

Options:

Correct Answer: The bridge is balanced.

Solution:

When R1/R2 = R3/R4, the bridge is balanced, meaning no current flows through the galvanometer.

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?

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?

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.

Wheatstone Bridge – A circuit used to measure unknown resistances by balancing two legs of a bridge circuit.
Balanced Condition – The condition in which the ratio of resistances in one leg of the bridge equals the ratio in the other leg, resulting in no current through the galvanometer.