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What is the purpose of a galvanometer in a Wheatstone bridge?
What is the purpose of a galvanometer in a Wheatstone bridge?
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Practice Questions
1 question
Q1
What is the purpose of a galvanometer in a Wheatstone bridge?
To measure voltage
To measure current
To detect the balance condition
To provide power
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A galvanometer is used to detect the balance condition in a Wheatstone bridge by indicating zero current when balanced.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the purpose of a galvanometer in a Wheatstone bridge?
Solution:
A galvanometer is used to detect the balance condition in a Wheatstone bridge by indicating zero current when balanced.
Steps: 6
Show Steps
Step 1: Understand what a Wheatstone bridge is. It is a circuit used to measure unknown electrical resistances.
Step 2: Know that a galvanometer is a device that can detect small electric currents.
Step 3: Learn that in a Wheatstone bridge, there are four resistors arranged in a diamond shape.
Step 4: Realize that the goal of the Wheatstone bridge is to find a balance where the current through the galvanometer is zero.
Step 5: Understand that when the bridge is balanced, it means the ratios of the resistances are equal, and no current flows through the galvanometer.
Step 6: Conclude that the purpose of the galvanometer is to show when the bridge is balanced by indicating zero current.
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