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In a practical Wheatstone bridge, what is the main source of error?
In a practical Wheatstone bridge, what is the main source of error?
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Practice Questions
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Q1
In a practical Wheatstone bridge, what is the main source of error?
Temperature variations
Resistance of the connecting wires
Calibration of the galvanometer
Non-ideal resistors
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Non-ideal resistors can introduce errors in the measurements due to their tolerance and temperature coefficients.
Questions & Step-by-step Solutions
1 item
Q
Q: In a practical Wheatstone bridge, what is the main source of error?
Solution:
Non-ideal resistors can introduce errors in the measurements due to their tolerance and temperature coefficients.
Steps: 5
Show Steps
Step 1: Understand what a Wheatstone bridge is. It is a circuit used to measure unknown resistances.
Step 2: Know that the Wheatstone bridge uses four resistors to balance the circuit.
Step 3: Recognize that resistors are not perfect; they have tolerances, meaning their actual resistance can vary from their labeled value.
Step 4: Learn that temperature can affect resistors, changing their resistance as the temperature changes.
Step 5: Realize that these imperfections in resistors can lead to errors in the measurements taken with the Wheatstone bridge.
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