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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