If a potentiometer is used to measure the potential difference across a resistor
Practice Questions
Q1
If a potentiometer is used to measure the potential difference across a resistor, what must be true about the circuit?
The resistor must be in series with the potentiometer.
The potentiometer must be connected in parallel with the resistor.
The potentiometer must be connected in series with the power supply.
The resistor must be short-circuited.
Questions & Step-by-Step Solutions
If a potentiometer is used to measure the potential difference across a resistor, what must be true about the circuit?
Correct Answer: Potentiometer ko resistor ke parallel connect karna chahiye.
Step 1: Understand what a potentiometer is. It is a device used to measure voltage or potential difference.
Step 2: Know that a resistor is a component in a circuit that resists the flow of electric current.
Step 3: Realize that to measure the voltage across a component (like a resistor), you need to connect the measuring device (potentiometer) directly across that component.
Step 4: Connect the potentiometer in parallel with the resistor. This means both ends of the potentiometer should be connected to the same two points of the resistor.
Step 5: Ensure that the circuit is powered so that there is a potential difference across the resistor to measure.
Potentiometer Functionality – A potentiometer is used to measure voltage by balancing it against a known reference voltage, requiring it to be connected in parallel to the component whose voltage is being measured.
Circuit Configuration – Understanding the correct configuration of components in a circuit is crucial for accurate measurements, particularly the distinction between series and parallel connections.
