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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 2 > Chapter 3 - Current Electricity > In a potentiometer of one metre length an unknown emf voltage source is balanced at 60 cm length of potentiometer wire, while a 3v battery is balanced at 45 cm length. Then, the emf of the unknown voltage source is :

In a potentiometer of one metre length an unknown emf voltage source is balanced at 60 cm length of potentiometer wire, while a 3v battery is balanced at 45 cm length. Then, the emf of the unknown voltage source is :

In a potentiometer of one metre length an unknown emf voltage source is balanced at 60 cm length of potentiometer wire the emf of the unknown voltage source is : while a 3v battery is balanced at 45 cm length. Then