If in an experiment of Wheatstone bridge, the positions of cells and galvanometer are interchanged, then the balance points will
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a
change
b
remain unchanged
c
depend on the internal resistance of the cell and resistance of the galvanometer
d
none of these
answer is B.
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Detailed Solution
When Wheatstone bridge is balanced,PQ=RS. If the galvanometer is replaced with a cell in balanced Wheatstone bridge, the condition for balanced bridge will be P/R = Q/S, which is there. Hence, balance point will remain unchanged, where galvanometer shows no current.