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What is the principle behind a potentiometer?

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Question: What is the principle behind 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 without drawing current from the circuit.

What is the principle behind a potentiometer?

Practice Questions

Q1
What is the principle behind 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 behind 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 compares the unknown voltage to a known reference voltage.
  • Step 3: Realize that it does this by adjusting a knob or slider to balance the two voltages.
  • Step 4: Remember that this method allows for accurate measurements without using any current from the circuit.
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