The potentiometer wire has length 10m and resistance `10Omega`, if the current flowing through it is 0.4A, what are the balancing lengths when two cells of emfs 1.3V and 1.1V are connected so as to:- assist and

The potentiometer wire has length 10m and resistance 10Omega , if the current flowing through it is 0.4A, what are the balancing lengths when two cells of emfs 1.3V and 1.1V are connected so as to:- oppose each other?

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 of 2m and resistance 10Omega . It is connected in series with resistance 990Omega and a cell of emf 2V. Calculate the potential gradient along the wire.

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 ?

A potentiometer wire has a length 10 m and resistance 20 ohm.Its terminals are connected to a cell of emf 5 V and internal resistance 5 ohm. What are the distances at which null points are obtained when two cells of emfs 1.5 V and 1.3 V are connected so as to oppose each other

A potentiometer wire has a length of 4 m and resistance of 4 Omega . What resistance must be connected in series with the potentiometer wire and a cell of e.m.f. 2 V having internal resistance 2 Omega to get a potential drop of 10^-3V/(cm) along the wire?

A potentiometer consists of a wire of length 4 m and resistance 10 Omega . If is connected of cell of emf 2V . The potential difference per unit length of the wire will be

A potentiometer wire of length 100 cm has a resistance of 10Omega . It is connected in series with a resistance and an accumulator of e.m.f. 2 V and negligible internal resistance. A source of e.m.f. 10 mV is balanced against a 40 cm length of the potentiometer wire. The value of the external resistance is

In figure,the potentiometer wire A B has a resistance of 5 Omega and length 10m. The balancing length AJ for the cell of e.m.f.of 0.4 V is

In given figure, the potentiometer wire AB has a resistance of 5Omega and length 10 m. The balancing length AM for the e.m.f. of 0.4 V is