If the internal resistance of a cell is negligible, how does it affect the accuracy of a potentiometer measurement?
Practice Questions
1 question
Q1
If the internal resistance of a cell is negligible, how does it affect the accuracy of a potentiometer measurement?
It increases accuracy
It decreases accuracy
It has no effect
It makes the measurement impossible
If the internal resistance of a cell is negligible, it increases the accuracy of the potentiometer measurement as it does not affect the voltage being measured.
Questions & Step-by-step Solutions
1 item
Q
Q: If the internal resistance of a cell is negligible, how does it affect the accuracy of a potentiometer measurement?
Solution: If the internal resistance of a cell is negligible, it increases the accuracy of the potentiometer measurement as it does not affect the voltage being measured.
Steps: 5
Step 1: Understand what a potentiometer is. A potentiometer is a device used to measure voltage by comparing it to a known reference voltage.
Step 2: Know what internal resistance means. Internal resistance is the resistance within a cell (battery) that can affect the voltage it provides.
Step 3: Recognize that negligible internal resistance means the cell behaves almost like an ideal voltage source, providing a stable voltage.
Step 4: Realize that if the internal resistance is negligible, the voltage from the cell remains constant and does not drop when current flows.
Step 5: Conclude that with a stable voltage from the cell, the potentiometer can measure the voltage more accurately without interference from the cell's internal resistance.
