[" With a potentiometer null points were "],[" obtained at "140cm" and "180cm" with cells "],[" of emf "1.1V" and one unknown value "],[" respectively.The unknown emf is "]

With a potentiometer null point were obtained at 140 cm and 180 cm with cells of emf 1.1 V and one unknown chi volts. Unknown emf is

Using a potentiometer, balance points are obtained at 60 cm and 10 cm with two cells connected in series first to support one another and then in opposition respectively. Find the ratio of the emfs of the cells.

In a potentiometer experiment, the null point is obtained at 140 cm for a cell of e.m.f. 1.2 V. With another cell of unknown e.m.f., the null point is obtained at 210 cm. The unknown e.m.f. is

The length of potentiometer wire is 1m and its resistance is 4Omega . Acurrent of 5mA is flowing in it. An unknown emf is balanced on 40 cm length of this wire. The unknown emf is x mv. What is the value of .x. ?

The length of potentiometer wire is 1m and its resistance is 4Omega . Acurrent of 5mA is flowing in it. An unknown emf is balanced on 40 cm length of this wire. The unknown emf is x mv. What is the value of .x. ?

If null point of meter bridge is obtained at 50 cm what will be value of unknown resistor ?