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If the resistance of the potentiometer wire is increased, what effect does it ha

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Question: If the resistance of the potentiometer wire is increased, what effect does it have on the measurement accuracy?

Options:

  1. Increases accuracy
  2. Decreases accuracy
  3. No effect
  4. Depends on the length of the wire

Correct Answer: Decreases accuracy

Solution: 

Increasing the resistance of the potentiometer wire can lead to a larger voltage drop, which may decrease measurement accuracy due to increased error in balancing.

If the resistance of the potentiometer wire is increased, what effect does it ha

Practice Questions

Q1
If the resistance of the potentiometer wire is increased, what effect does it have on the measurement accuracy?
  1. Increases accuracy
  2. Decreases accuracy
  3. No effect
  4. Depends on the length of the wire

Questions & Step-by-Step Solutions

If the resistance of the potentiometer wire is increased, what effect does it have on the measurement accuracy?
Correct Answer: Measurement accuracy decreases.
  • Step 1: Understand what a potentiometer is. It is a device used to measure voltage by comparing it to a known reference voltage.
  • Step 2: Know that the potentiometer wire has a certain resistance that affects how it works.
  • Step 3: When the resistance of the potentiometer wire is increased, it causes a larger voltage drop across the wire.
  • Step 4: A larger voltage drop means that the voltage available for measurement is reduced.
  • Step 5: This reduction can make it harder to accurately balance the potentiometer, leading to potential errors in the measurement.
  • Step 6: Therefore, increasing the resistance of the potentiometer wire can decrease the accuracy of the measurements.
  • Potentiometer Functionality – Understanding how a potentiometer measures voltage and the role of wire resistance in its operation.
  • Voltage Drop and Measurement Accuracy – The relationship between resistance, voltage drop, and the precision of measurements in electrical circuits.
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