Assertion: The emf of the cell in secondary circuit must be less than emf of cell in primary circuit in potentiometer.
Reason: Balancing length cannot be more than length of potentiometer wire.
A. Both (A) and (R) are true and (R) is the correct explanantion of A.
B. Both (A) and (R) are true but (R) is not the correct explanation of A.
C. (A) is true but (R) is false
D. (A) is false but (R) is true.
