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 of 1.5 m and resistance of 10 Omega . It is connected in series with the cell of emf 4 Volt and internal resistance 5 Omega . Calculate thepotential drop per centimeter of the wire.

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

A potentiometer wire is 10 m long and has a resistance of 2 Omega//"m". It is connected in series with a battery of e.m.f. 3 V and a resistance of 10Omega . The potential gradient along the wire in V/m is

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 wire has length 4 m and resistance 8 Omega . The resistance that must be connected in series with the wire and an accumulator of e.m.f. 2 V , so as the get a potential gradient 1 mV per cm on the wire is

A potentiometer wire has length 4 m and resistance 8Ω. The resistance that must be connected in series with the wire and an accumulator of e.m.f. 2 V, so as to get a potential gradient 1 mV per cm on the wire is

A potentiometer wire of length 10 m and resistance 9 ohm is connected to a battery of e.m.f. 2.1 volt having internal resistance 1.5 Omega . Find the potential gradient along the wire and the balancing length for a cell of e.m.f. 1.08 volt .

A potentiometer wire of length 1m and resistance 10 Omega is connected in series with a cell of emf 2V with internal resistance 1 Omega and a resistance box including a resistance R. If potential difference between the ends of the wire is 1 mV, the value of R is

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 ?