A potentiometer wire is 10 m long and has a resistance of `18Omega`. It is connected to a battery of emf 5 V and internal resistance `2Omega`. Calculate the potential gradient along the wire.

A potentiometer wire 10 long has a resistance of 40Omega . It is connected in series with a resistances box and a 2 v storage cell. If the potential gradient along the wire is 0.01(V)/(m) the resistance unplugged in the box is

A potentiometer wire of 10 m length and having a resistance of 1ohm/m is connected to an accumlator of emf 2.2 volt and a high resistance box. To obtain a potential gradient of 2.2m V/m. the value of resistance used from the resistance box is:-

A potentiometer wire of length 10 m and resistance 30 Omega is connected in series with a battery of emf 2.5 V , internal resistance 5 Omega and an external resistance R . If the fall of potential along the potentiometer wire is 50 mu V mm^(-1) , then the value of R is found to be 23 n Omega . What is n ?

A potentiometer wire of length 1 m has a resistance of 10Omega . It is connected to a 6V battery in series with a resistance of 5Omega . Determine the emf of the primary cell which gives a balance point at 40cm.

Potentiometer wire length is 10m, having a total resistance of 10Omega , if a battery of emf 2 volt negligible internal resistance and a rheostat is connected to it then potential gradient is 20mV/m find the resistance applied through rheostat:-

The wire of potentiometer has resistance 4 Omega and length 1m. It is connected to a cell of e.m.f. 2V and internal resistance 1 Omega . The current flowing through the potentiometer wire is

The potentiometer wire 10m long and 20 ogm resistance is connected to a 3 volt emf battery and a 10ohm resistance. The value of potential gradient in volt/m of the wire will be

A potentiometer wire of length 10m and resistance 30 ohm is connected in series with a battery of emf 2.5V, internal resistance 5 ohm and external resistance R. If the fall of potential along the potentiometer wire is 50mV/m, the value of R is ohms is

A potentiometer wire of length 100 cm has a resistance of 100Omega it is connected in series with a resistance and a battery of emf 2 V and of negligible internal resistance. A source of emf 10 mV is balanced against a length of 40 cm of the potentiometer wire. what is the value of the external resistance?

A 10m long potentiometer wire has a resistance of 20 ohm. It is connected in series with a battery of emf 3V and a resistance of 10Omega . The internal resistance of cell is negligible. If he length can be read accurately up 10 1mm, the potentiometer can read voltage.