Which of the following statements is true regarding the use of a potentiometer?
Practice Questions
Q1
Which of the following statements is true regarding the use of a potentiometer?
It can measure current directly
It requires a galvanometer for operation
It can only measure AC voltages
It is not affected by the internal resistance of the source
Questions & Step-by-Step Solutions
Which of the following statements is true regarding the use of a potentiometer?
Correct Answer: A potentiometer is not affected by the internal resistance of the source.
Step 1: Understand what a potentiometer is. A potentiometer is a device used to measure voltage by comparing it to a known voltage.
Step 2: Learn about internal resistance. Internal resistance is the resistance within a power source (like a battery) that can affect the voltage output.
Step 3: Know how a potentiometer works. A potentiometer measures voltage by balancing the unknown voltage against a reference voltage without drawing current from the source.
Step 4: Realize that because a potentiometer does not draw current, it is not affected by the internal resistance of the source.
Step 5: Conclude that the statement about the potentiometer not being affected by internal resistance is true.
