NEET | 2017Current Electricity and Electrical InstrumentEasy
Question
A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F. because the method involves :-
Options
A.
Potential gradients
B.
A condition of no current flow through the galvanometer
C.
A combination of cells, galvanometer and resistances
D.
Cells
Solution
In zero deflection condition, potentiometer draws no current.
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