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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