NEET 2020Medium
Q.In a potentiometer, the balancing length for a standard cell is 400 cm. For an unknown cell, it is 300 cm. The emf of unknown cell is
a
3/4 of standard
b
4/3 of standard
c
same
d
none
Correct Answer: Option A
The correct solution involves applying the fundamental concept to derive the final value step by step...