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What is the principle of a potentiometer?

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Question: What is the principle of a potentiometer?

Options:

  1. It measures current in a circuit.
  2. It measures voltage by balancing it against a known voltage.
  3. It measures resistance directly.
  4. It measures power in a circuit.

Correct Answer: It measures voltage by balancing it against a known voltage.

Solution: 

A potentiometer measures voltage by balancing it against a known voltage, allowing for accurate voltage measurements.

What is the principle of a potentiometer?

Practice Questions

Q1
What is the principle of a potentiometer?
  1. It measures current in a circuit.
  2. It measures voltage by balancing it against a known voltage.
  3. It measures resistance directly.
  4. It measures power in a circuit.

Questions & Step-by-Step Solutions

What is the principle of a potentiometer?
Correct Answer: A potentiometer measures voltage by balancing it against a known voltage.
  • Step 1: Understand that a potentiometer is a device used to measure voltage.
  • Step 2: Know that it works by comparing an unknown voltage to a known voltage.
  • Step 3: Set up the potentiometer with a known voltage source.
  • Step 4: Adjust the potentiometer until the voltage is balanced (equal) with the known voltage.
  • Step 5: Read the measurement from the potentiometer, which tells you the value of the unknown voltage.
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