The resistance of a potentiometer wire is `8 Omega`and its length is 8 m. A resistance box and a 2V battery are connected in series with it. What should be the resistance in the box, if it is desired to have a potential drop of `1muV//mm`?.

The resistance of a potentiometer wire is 10 Omega and its length is 10 meter. A resistance box and 2 V accumulator are placed in series with it. What should be the value of resistance in the box if it is desired to have potential drop of 1muV /mm?

Three resistors having resistances of 15 Omega , 3 Omega and 4 Omega are connected in series. What is the effective resistance in the circuit?

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 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 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

Resistors having resistances of 8 Omega , 6 Omega and 12 Omega are connected in parallel. What is the effective resistance in the circuit?

Three resistors having resistances of 12 Omega , 9 Omega , 4 Omega and 3 Omega are connected in series. What is the effective resistance in the circuit?

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