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In the adjoining figure of a potentiomet...

In the adjoining figure of a potentiometer arrangement, B is the main battery, C is the cell whose emf is to be determined, WW' is the potentiometer wire, G is the galvanometer and Jis the jockey which may touch any point on the wire WW'. Choose the correct alternativels for the potentiometer to work properly

A

The emf of B must be greater than the emf C

B

Two batteries B and C must be joined so that the same polarity terminals are joined together

C

The positive terminals of two cells must be joined together to end W.

D

The galvanometer resistance must be less than the resistance of potentiometer wire

Text Solution

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The correct Answer is:
A, B
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