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Why is a potentiometer preferred over a voltmeter for measuring voltage?
Why is a potentiometer preferred over a voltmeter for measuring voltage?
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Practice Questions
1 question
Q1
Why is a potentiometer preferred over a voltmeter for measuring voltage?
It is cheaper
It provides more accurate measurements
It is easier to use
It requires less power
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A potentiometer is preferred because it provides more accurate measurements as it does not draw current from the circuit.
Questions & Step-by-step Solutions
1 item
Q
Q: Why is a potentiometer preferred over a voltmeter for measuring voltage?
Solution:
A potentiometer is preferred because it provides more accurate measurements as it does not draw current from the circuit.
Steps: 5
Show Steps
Step 1: Understand what a voltmeter does. A voltmeter measures voltage by connecting to the circuit and drawing some current.
Step 2: Know that when a voltmeter draws current, it can affect the circuit's behavior, leading to less accurate readings.
Step 3: Learn about a potentiometer. A potentiometer measures voltage without drawing current from the circuit.
Step 4: Realize that because a potentiometer does not draw current, it does not disturb the circuit, allowing for more accurate voltage measurements.
Step 5: Conclude that a potentiometer is preferred over a voltmeter for measuring voltage because it gives more reliable results.
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