Potentiometer: JEE Questions & Solutions

To compare EMF of two cells using potentiometer... 200 cm and 150 cm... percentage error in the ratio of EMFs is.

In the potentiometer, when the cell in the secondary circuit is shunted with 4 resistance, the balance is obtained at a length 120 cm of…

In a moving coil galvanometer, two moving coils M1 and M2 have the following particulars: R1 = 5, N1 = 15, A1 = 3.6 10^-3 m^2, B1 = 0.25 T…

The deflection in a moving coil galvanometer falls from 25 divisions to 5 divisions when a shunt of 24 is applied. The resistance of the…

A current of 200 A deflects the coil of a moving coil galvanometer through 60^. The current to cause deflection through /10 radians is:

With the help of a potentiometer, we can determine the value of the emf of a given cell. The sensitivity of the potentiometer is:…

A null point is found at 200 cm in a potentiometer when the cell in the secondary circuit is shunted by 5. When a resistance of 15 is used…

In an experiment to find emf of a cell using potentiometer, the length of null point for a cell of emf 1.5 V is found to be 60 cm. If this…

For designing a voltmeter of range 50 V and an ammeter of range 10 mA using a galvanometer which has a coil resistance 54 and shows…