In comparing e. m. f. of two cells with the help of a potentiometer, at the balance point, the parent flowing through the wire is taken from

When the plant is at flowering stage

In comparing e. m. f. of two cells with the help of a potentiometer, a

1.	In comparing e. m. f. of two cells with the help of a potentiometer, at the balance point, the parent flowing through the wire is taken from
A.	one of these cells
B.	both of these cells
C.	When the plant is at flowering stage
D.	none of these
Answer» D. none of these

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In comparing e. m. f. of two cells with the help of a potentiometer, at the balance point, the parent flowing through the wire is taken from

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