The below figure shows a potentiometer arrangement, where B_1 is the driving cell, B_2 is the cell whose emf is to be determined. AB is the potentiometer wire and G is the galvanometer. J is a sliding contact which can touch any point on AB. Which of the following are essential conditions for obtaining balance?

The below figure shows a potentiometer arrangement, where B_1 is the d

1.	The below figure shows a potentiometer arrangement, where B_1 is the driving cell, B_2 is the cell whose emf is to be determined. AB is the potentiometer wire and G is the galvanometer. J is a sliding contact which can touch any point on AB. Which of the following are essential conditions for obtaining balance?
Answer» The emf of `B_1` must be greater than the emf of `B_2` EITHER the positive TERMINALS of both `B_1 and B_2` or the negative terminals of both `B_(1) and B_(2)` must be joined at A The positive terminals of `B_1 and B_2` must be joined to A The RESISTANCE of G must be less than the resistance of AB Answer :A::B

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