Current Electricity and Electrical InstrumentMedium
Question
In a potentiometer arrangement E1 is the cell establishing current in primary circuit E2 is the cell to be measured. AB is the potentiometer wire and G is a galvanometer. Which of the following are the essential condition for balance to be obtains
Options
A.The emf of E1 must be greater than the emf of E2
B.Either the positive terminals of both E1 and E2 or the negative terminals of both E1 and E2 must be joined to one end of potentiometer wire
C.The positive terminals of E1 and E2 must be joined to one end of potentiometer wire
D.The resistance of G must be less than the resistance of AB
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