Current Electricity and Electrical InstrumentMedium
Question
In a balanced wheat stone bridge, current in the galvanometer is zero. It remains zero when
Options
A.battery emf is increased
B.all resistances are increased by 10 ohms
C.all resistances are made five times
D.the nattery and the galvanometer are interchanged
Solution
For wheat stone Bridge condition is 
Therefore null point is independent of the battery voltage.
Therefore null point is independent of the battery voltage.
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