In a balanced Wheatstone bridge, the potential difference across the galvanomete
Practice Questions
Q1
In a balanced Wheatstone bridge, the potential difference across the galvanometer is:
Equal to the supply voltage.
Zero.
Equal to the resistance of the galvanometer.
Equal to the potential difference across R1.
Questions & Step-by-Step Solutions
In a balanced Wheatstone bridge, the potential difference across the galvanometer is:
Correct Answer: zero
Step 1: Understand what a Wheatstone bridge is. It is a circuit used to measure unknown electrical resistances.
Step 2: Know that a Wheatstone bridge consists of four resistors arranged in a diamond shape with a galvanometer connected between two points.
Step 3: Learn about the concept of 'balanced' in a Wheatstone bridge. It is balanced when the ratio of the resistances in one branch is equal to the ratio in the other branch.
Step 4: When the bridge is balanced, the current through the galvanometer is zero because there is no potential difference across it.
Step 5: Therefore, in a balanced Wheatstone bridge, the potential difference across the galvanometer is zero.
