A potentiometer arrangement is shows in Fig. `6.62`. The driver cell has emf `e` and internal resistance `r`. The resistance of potentiometer wire `AB` is `R.F` is the cell of emf `e//3` and internal resistance `r//3`. Balance point `(J)` can be obtained for all finite value of

A cell of emf (E) and internal resistance (r) is balanced across (l) length of potentiometer wire. If another cell of emf 2E and internal resistance (2r) is connected in parallel to the first cell , then the balancing length will be

In the potentiometer arrangement shown, the driving cell A has emf epsilon and internal resistance r . The emf of the cell B is (epsilon)/(2) and internal resistance 2r . The potentiometer wire CD is 100 cm long. If balance is obtained with length CJ = l , then

In a potentiometer circuit, the emf of driver cell is 2V and internal resistance is 0.5 Omega . The potentiometer wire is 1m long . It is found that a cell of emf 1V and internal resistance 0.5 Omega is balanced against 60 cm length of the wire. Calculate the resistance of potentiometer wire.

In a potentiometer circuit, the emf of driver cell is 2V and internal resistance is 0.5 Omega . The potentiometer wire is 1m long . It is found that a cell of emf 1V and internal resistance 0.5 Omega is balanced against 60 cm length of the wire. Calculate the resistance of potentiometer wire.

In a connection of 10 dry cells each of emf E and internal resistance r in series, two cell is connected opposite. Net emf and net internal resistance will be:

The potentiometer wire of resistance R is connected in series with a cell of e.m.f. E and of resistance R_(h) . The current flowing through the potentiometer wire is

The internal resistance of a cell of emf E is r, and external resistance is R. What is the potential about the external Resistance

The e.m.f. of a cell is E volts and internal resistance is r ohm. The resistance in exteral circuit is also r ohm. The p.d across the cell will be

Plot a graph showing the variation of current 'T' versus resistance 'R', connected to a cell of emf E and internal resistance 'r'.

Passage - II : Consider a potentiometer arrangement having auniform wire AB of resistance 99Omega A driving battery of 10V emf and 1Omega internal resistance is used in the potentiometer. A cell of unknown emf E_(1) and internal resistance of 1Omega is balanced agains AC length of potentiometer wire. When jockey is touched with wire AB at point C such that AC = 40 cm, there is no deflection in galvanometer. The emf of cell is