When using a potentiometer, why is it important to keep the circuit closed while taking measurements?
Correct Answer: It is important to keep the circuit closed to ensure accurate voltage measurements.
- Step 1: Understand what a potentiometer is. It is a device used to measure voltage in a circuit.
- Step 2: Know that a circuit needs to be closed for electricity to flow. A closed circuit means all parts are connected.
- Step 3: When the circuit is closed, current can flow through the potentiometer.
- Step 4: If the circuit is open (not closed), no current flows, and you cannot get a voltage reading.
- Step 5: Accurate voltage measurements are only possible when the current is flowing, which happens in a closed circuit.
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