Current Electricity and Electrical InstrumentHard
Question
In a potentiometer experiment an unknown voltage source is balanced at 60 cm. length where as a 3 volt battery is balanced at 30 cm. length. What is the voltage of unknown emf source :-
Options
A.3V
B.4V
C.4.5V
D.6V
× 60 = 6 voltTopic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
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