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A potentiometer wire has a length 10m an...

A potentiometer wire has a length 10m and a resistance `20Omega`. Its terminals are connected to a battery of e.m.f. 4V and internal resistance `5Omega`. What are the distances at which null points are obtained when two cells of e.m.f.s 1.5V and 1.3 V are connected so as to a ) assist and b) oppose each other ?

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A potentiometer wire has a length 10 m and a resistance 20 Omega . Its terminals are connected to a battery of e.m.f. 4 V and internal resistance 5 Omega . What are the distances at which null points are obtained when two cells of e.m.f.s 1.5 V and 1.3 V are connected so as to assist ?

A potentiometer wire has a length 10 m and a resistance 20 Omega . Its terminals are connected to a battery of e.m.f. 4 V and internal resistance 5 Omega . What are the distances at which null points are obtained when two cells of e.m.f.s 1.5 V and 1.3 V are connected so as to oppose each other ?

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