Current Electricity Charging Discharging Of Capacitors Question 34
Question: Assertion : A potentiometer of longer length is used for accurate measurement. Reason : The potential gradient for a potentiometer of longer length with a given source of e.m.f. becomes small.
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: A
Solution:
Sensitivity $ \propto \frac{1}{\text{Potential gradient}}\propto (\text{Length of wire)} $
BETA
