In a Wheatstone's meter-bridge experiment, the null point is obtained in middle one third portion of wire.Why is it recommended?

Accuracy of a metrebridge is maximum when the null point is obtained at the midpoint of the bridge wire. This is because

In a meter bridge experiment null point is obtained at 20 cm. from one end of the wire when resistance X is balanced against another resistance Y. If X lt Y, then where will be the new position of the null point from the same end, if one deicdes to balance a resistance of 4 X against Y

At what point the null point be obtained in meterbridge experiment when the ratio of resistance in two gaps is 3:7 ?

In an experiment of meter bridge, a null point is obtaining at the center of the bridge wire. When a resistance of 10 ohm is connected in one gap, the value of resistance other gap is

Two coils are connected in series in one gap of the meterbridge and null point is obtained of the middle of the wire by putting 75Omega in the other gap. Two coils are then connected in parallel and the null point is obtained again at the middle of the wire when the resistance in the other gap is changed by 57Omega . Find the resistance of each coil.

With an unknown resistance X in the left gap and a resistance of 30 Omega in the right gap of meter bridge . The null point is obtained at 40 cm from the left end of the wire . Find i) the unknown resistance and ii)the shift in the position of the null point , when the resistances in both the gaps are increased by 15 Omega .

With an unknown resistance X in the left gap and a resistance of 30 Omega in the right gap of meter bridge . The null point is obtained at 40 cm from the left end of the wire . Find i) the unknown resistance and ii)the shift in the position of the null point , when the resistance in each gap is shunted by a resistance of 8 Omega .

Two coils are connected in series in one gap of metre bridge and null point is obtained at the middle of wire by putting 50 ohm resistance in other gap. The two coils are then connected in parallel and it is found that resistance in the other gap has to be decreased by 38 Omega to get the null point at same place as before. Find the resistance of each coil

In potentiometer experiment, null point isobtained at a particular point for a cell on potentiometer wire x cm long. If the lengthof the potentiometer wire is increasedwithout changing the cell, the balancing length will (Driving source is not changed)

A coil of unknown resistance is placed in the left gap of a metre bridge and a resistance R is placed in the right gap. The null point is obtained at a distance of 40 cm from the left end. When a resistance of 10 ohm is connected in series with the coil and the same resistance R is kept in the right gap,the null point is obtained at the centre of wire. Find the resistance of the coil.