In the shown potentiometer arrangement the wire PQ has a resistance of `5Omega` and the driver cell has an emf of 2V. If a balance point is obtained at 0.6 m along PQ, what is the value of resistance `R` (in `Omega`)?
(Length PQ = 1 m)

Figure 6.51 shows a simple a potentiometer circuit for measuring a small emf produced by a thermocouple. The meter wire PQ has a resistance of 5 Omega , and the driver cell has an emf of 2.00 V . If a balance point is obtained 0.600 m along PQ when measuring an emf of 6.00 mV , what is the value of resistance R ?

Figure 6.51 shows a simple a potentiometer circuit for measuring a small emf produced by a thermocouple. The meter wire PQ has a resistance of 5 Omega , and the driver cell has an emf of 2.00 V . If a balance point is obtained 0.600 m along PQ when measuring an emf of 6.00 mV , what is the value of resistance R ?

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

In given figure, the potentiometer wire AB has a resistance of 5 Omega and length 10 m . The balancing length AM for the emf 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

A potentiometer wire of length 100 cm has a resistance of 10 Omega . It is connected in series with a resistance R and cell of emf 2 V and of of 40 cm of the potentiometer wire. What is the value of R ?

A potentiometer wire has a resistance of 20 Omega and length 10 m. It is connected in series with a battery of emf 2.5 V and negligible internal resistance, and an external resistance of 5 Omega . Fall of potential in mV per metre is