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Q. A Potentiometer wire has a length 10m and a resis†an ce 20Ω, its terminals are connected to a battery of emf 4V and internal resis†an ce 5Ω . what are the dis†an ce at which null points are obtained when 2 cells of emf's 1.5V and 1.3V are connected so as to A\rbrack assist B\rbrack oppose each other ? |
| Answer» Q. A Potentiometer wire has a length 10m and a resis†an ce 20Ω, its terminals are connected to a battery of emf 4V and internal resis†an ce 5Ω . what are the dis†an ce at which null points are obtained when 2 cells of emf's 1.5V and 1.3V are connected so as to A\rbrack assist B\rbrack oppose each other ? | |