Question
Physics Question on Current electricity
Potentiometer is used only to compare potential differences The potentiometer draws current from the voltage source being measured
A
If both assertion and reason are true and reason is the correct explanation of assertion
B
If both assertion and reason are true but reason is not the correct explanation of assertion
C
If assertion is true but reason is false
D
If both assertion and reason are false
Answer
If both assertion and reason are false
Explanation
Solution
Potentiometer is a device used to compare potential differences. Since the method involves a condition of no current flow, the device can be used to measure potential difference, internal resistance of a cell and compare emf s of two sources. Potentiometer draws no current from the voltage source being measured